Mark Lester Books

Advanced English grammar for ESL learners

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"To fully understand how to speak English effectively you must move beyond the fundamental principles of grammar and tackle more sophisticated sentence constructions. Practice Makes Perfect: Advanc...

English grammar drills

By Mark Lester

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"Confident use of grammar is an essential foundation for learning English. English Grammar Drills will help you lay this foundation through clear explanations and rigorous practice. Your language s...

Writing that Works 10e MLA APA Update Commonsense Guide to Grammar and Usage 6e

By Gerald J. Alred, Walter E. Oliu, Mark Lester, Larry Beason, Charles T. Brusaw

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Bedford Reader 11e Commonsense Guide to Grammar and Usage 6e

By X. J. Kennedy, Jane E. Aaron, Mark Lester, Dorothy M. Kennedy, Larry Beason

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Models for Writers 10e Commonsense Guide to Grammar and Usage 5e with 2009 MLA Updates

By Alfred Rosa, Paul Eschholz, Mark Lester, Larry Beason

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Compact Reader 9e Commonsense Guide to Grammar and Usage 5e with 2009 MLA Update

By Ellen Kuhl Repetto, Jane E. Aaron, Mark Lester, Larry Beason

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Concise Guide to Writing 6e Commonsense Guide to Grammar and Usage 6e WritingClass

By Charles R. Cooper, Rise B. Axelrod, Mark Lester, Larry Beason

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Commonsense Guide to Grammar and Usage 5e with 2009 MLA Update WritingClass

By Mark Lester, Larry Beason

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Reading Critically Writing Well 9e Commonsense Guide to Grammar and Usage 6e WritingClass

By Charles R. Cooper, Rise B. Axelrod, Alison M. Warriner, Mark Lester, Larry Beason

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Commonsense Guide to Grammar and Usage 6e Exercise Central to Go

By Mark Lester, Larry Beason

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.