APA (7e ed.) Bronvermelding

Turner, J. R. (1919). Introduction to economics. Scribner's.

Chicago (17e ed.) Bronvermelding

Turner, John Roscoe. Introduction to Economics. New York: Scribner's, 1919.

MLA (9e ed.) Bronvermelding

Turner, John Roscoe. Introduction to Economics. Scribner's, 1919.