Merriam–Webster's Dictionary of English Usage

Merriam–Webster's Dictionary of English Usage is a usage dictionary published by Merriam-Webster, Inc., of Springfield, Massachusetts . It is currently available in a reprint edition (1994) ISBN 0-87779-132-5 or ISBN 978-0-87779-132-4. (The 1989 edition did not include Merriam– in the title. It was added as part of the rebranding campaign to emphasize the differences between Merriam–Webster's dictionaries and dictionaries of other publishers using the generic trademark Webster's.)