Cita APA

Cohen, L., & Manion, L. (1985). Research methods in education (2nd ed.). Croom Helm.

Citación estilo Chicago

Cohen, Louis, and Lawrence Manion. Research Methods in Education. 2nd ed. London: Croom Helm, 1985.

Cita MLA

Cohen, Louis, and Lawrence Manion. Research Methods in Education. 2nd ed. Croom Helm, 1985.