Cita APA

Gemmill, P. F. (1942). Economics: Principles and problems. New York: Harper & Brothers Publishers.

Chicago Style Citation

Gemmill, Paul F. Economics: Principles and Problems. New York: Harper & Brothers Publishers, 1942.

Cita MLA

Gemmill, Paul F. Economics: Principles and Problems. New York: Harper & Brothers Publishers, 1942.

Atenció: Aquestes cites poden no estar 100% correctes.