Cita APA (7th ed.)

Bello, J. Y. (1981). Basic principles of teaching. Spectrum ; Wiley.

Cita Chicago (17th ed.)

Bello, Joseph Y. Basic Principles of Teaching. Ibadan : Chichester: Spectrum ; Wiley, 1981.

Cita MLA (8th ed.)

Bello, Joseph Y. Basic Principles of Teaching. Spectrum ; Wiley, 1981.