Cita APA (7th ed.)
Gottheil, F. M. (1996). Principles of economics (ed.). South Western College Publishing.
Cita Chicago (17th ed.)
Gottheil, Fred M. Principles of Economics. ed. Ohio: South Western College Publishing, 1996.
Cita MLA (9th ed.)
Gottheil, Fred M. Principles of Economics. ed. South Western College Publishing, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.