APA

Truitt G., Whitman A. D., . (1936). Visualized principles and problems of economics. New York: Oxford book company.

Chicago

Truitt Gray, Whitman Arthur Dudley, . 1936. Visualized principles and problems of economics. New York: Oxford book company.

Harvard

Truitt G., Whitman A. D., . (1936). Visualized principles and problems of economics. New York: Oxford book company.

MLA

Truitt Gray, Whitman Arthur Dudley, . Visualized principles and problems of economics. New York: Oxford book company. 1936.