APA (7th ed.) Citation

Walker, R., & Adelman, C. (1990). A guide to classroom observation (Repr.). Routledge.

Chicago Style (17th ed.) Citation

Walker, Rob, and Clem Adelman. A Guide to Classroom Observation. Repr. London: Routledge, 1990.

MLA (9th ed.) Citation

Walker, Rob, and Clem Adelman. A Guide to Classroom Observation. Repr. Routledge, 1990.