Cita APA (7th ed.)

Betts, P. (1983). Supervisory studies (4th ed.). MacDonald and Evans.

Cita Chicago (17th ed.)

Betts, P.W. Supervisory Studies. 4th ed. Estover, Plymouth: MacDonald and Evans, 1983.

Cita MLA (9th ed.)

Betts, P.W. Supervisory Studies. 4th ed. MacDonald and Evans, 1983.