APA-viite (7. p.)

Wragg, E. C. (1994). An introduction to classroom observation. Routledge.

Chicago-viite (17. p.)

Wragg, E. C. An Introduction to Classroom Observation. London: Routledge, 1994.

MLA-viite (9. p.)

Wragg, E. C. An Introduction to Classroom Observation. Routledge, 1994.