Bach, G. R. (1970). Pairing. Avon Books.
Cita Chicago (17th ed.)Bach, George R. Pairing. New York: Avon Books, 1970.
Cita MLA (9th ed.)Bach, George R. Pairing. Avon Books, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)