Cita APA (7th ed.)

Hyman, H. H., & Singer, E. (1968). Readings in reference group theory and research. Free Press.

Cita Chicago (17th ed.)

Hyman, Herbert Hiram, i Eleanor Singer. Readings in Reference Group Theory and Research. New York: Free Press, 1968.

Cita MLA (9th ed.)

Hyman, Herbert Hiram, i Eleanor Singer. Readings in Reference Group Theory and Research. Free Press, 1968.