APA

Black J. D., . (1953). Introduction to economics for agriculture. New York: Macmillan.

Chicago

Black John Donald, . 1953. Introduction to economics for agriculture. New York: Macmillan.

Harvard

Black J. D., . (1953). Introduction to economics for agriculture. New York: Macmillan.

MLA

Black John Donald, . Introduction to economics for agriculture. New York: Macmillan. 1953.