APA (7th ed.) Citation

Bobcock, P. G., & Webster, M. (1961). Webster's third new international dictionary of the English language unabridged. Merriam Webster.

Chicago Style (17th ed.) Citation

Bobcock, Phillip Gove, and Merriam Webster. Webster's Third New International Dictionary of the English Language Unabridged. Springfields, Mass: Merriam Webster, 1961.

MLA (9th ed.) Citation

Bobcock, Phillip Gove, and Merriam Webster. Webster's Third New International Dictionary of the English Language Unabridged. Merriam Webster, 1961.