APA (7th ed.) Citation

Seligman, E. R. A. (1967). Essays in economics. A. M. Kelley.

Chicago Style (17th ed.) Citation

Seligman, Edwin R. A. Essays in Economics. New York: A. M. Kelley, 1967.

MLA (9th ed.) Citation

Seligman, Edwin R. A. Essays in Economics. A. M. Kelley, 1967.