Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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