Cita APA (7a ed.)

Black, J. D. (1953). Introduction to economics for agriculture. Mac-Millan.

Cita Chicago Style (17a ed.)

Black, John Donald. Introduction to Economics for Agriculture. New York: Mac-Millan, 1953.

Cita MLA (8a ed.)

Black, John Donald. Introduction to Economics for Agriculture. Mac-Millan, 1953.