Cita APA (7th ed.)
Selltiz, C., & Selltiz, C. (1959). Research methods in social relations.
Cita Chicago (17th ed.)
Selltiz, Claire, i Claire Selltiz. Research Methods in Social Relations. 1959.
Cita MLA (9th ed.)
Selltiz, Claire, i Claire Selltiz. Research Methods in Social Relations. 1959.
Atenció: Aquestes cites poden no estar 100% correctes.