Cita APA (7th ed.)

Opie, C. (2004). Doing educational research. Vistaar.

Cita Chicago (17th ed.)

Opie, Clive. Doing Educational Research. New Delhi: Vistaar, 2004.

Cita MLA (9th ed.)

Opie, Clive. Doing Educational Research. Vistaar, 2004.