APA (7th ed.) Citation

Collison, R. (1969). Dictionary of dates / compiled by Robert Collison. Greenwood Press.

Chicago Style (17th ed.) Citation

Collison, Robert. Dictionary of Dates / Compiled by Robert Collison. New York: Greenwood Press, 1969.

MLA (9th ed.) Citation

Collison, Robert. Dictionary of Dates / Compiled by Robert Collison. Greenwood Press, 1969.

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