GUFFEY Books

Samson Superslug and the Dracula Hunt
Business Communication
Business Communication

By Mary Ellen Guffey

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Canadian Business English
Canadian Business English

By Mary Ellen Guffey

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For over a decade, Canadian Business English has helped thousands of students improve their language skills and increase their employability. With an increased emphasis on editing, proofreading and...

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Essentials Of Business Communication, Annotated Instuctor'S Edition
Essentials Of Business Communication, Annotated Instuctor'S Edition

By GUFFEY, Mary Ellen Guffey

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This guide is a streamlined, no-nonsense approach to business communication. It takes a three-in-one approach: (1) text, (2) practical workbook, and (3) self-teaching grammar/mechanics handbook. Ch...

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Webtutor Advantage: Business Communication Process
Business English 8e
Business English 8e

By GUFFEY

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Stdt CD Bus English Prof Eng
Stdt CD Bus English Prof Eng

By GUFFEY

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Im W TB, Bus English 8e
Im W TB, Bus English 8e

By GUFFEY

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Reinfrcmnt Act Sol-Bus Engl
Reinfrcmnt Act Sol-Bus Engl

By GUFFEY

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Professional English
Professional English

By GUFFEY

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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.

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