Cita APA (7th ed.)

Nachmias, D., & Frankfort-Nachmias, C. (1976). Research methods in the social sciences. St. Martin's Press.

Cita Chicago (17th ed.)

Nachmias, David, i Chava Frankfort-Nachmias. Research Methods in the Social Sciences. New York: St. Martin's Press, 1976.

Cita MLA (9th ed.)

Nachmias, David, i Chava Frankfort-Nachmias. Research Methods in the Social Sciences. St. Martin's Press, 1976.