APA (7th ed.) Citation

Cattell, J. P. (1974). Directory of American scholars (sixth edition.). Bowker.

Chicago Style (17th ed.) Citation

Cattell, John Press. Directory of American Scholars. sixth edition. New York: Bowker, 1974.

MLA (9th ed.) Citation

Cattell, John Press. Directory of American Scholars. sixth edition. Bowker, 1974.