APA (7th ed.) Citation

MERRIAM... (1989). Merriam-Webster's word histories. Merriam-Webster.

Chicago Style (17th ed.) Citation

MERRIAM... Merriam-Webster's Word Histories. Merriam-Webster, 1989.

MLA (8th ed.) Citation

MERRIAM... Merriam-Webster's Word Histories. Merriam-Webster, 1989.

Warning: These citations may not always be 100% accurate.