Cita APA (7a ed.)

Perry, G. W., & Perry, P. (1969). Case-studies in teaching. Pitman.

Cita Chicago Style (17a ed.)

Perry, George W., y Pauline Perry. Case-studies in Teaching. London: Pitman, 1969.

Cita MLA (9a ed.)

Perry, George W., y Pauline Perry. Case-studies in Teaching. Pitman, 1969.