APA (7th ed.) Citation

Cohen, L., & Manion, L. (1994). Research methods in education (4th ed.). Routledge.

Chicago Style (17th ed.) Citation

Cohen, Louis, and Lawrence Manion. Research Methods in Education. 4th ed. London [etc.]: Routledge, 1994.

MLA (9th ed.) Citation

Cohen, Louis, and Lawrence Manion. Research Methods in Education. 4th ed. Routledge, 1994.