Gaya APA
Haimann, T., Hilgert, R, L. (1982).
Supervision : concepts and pratices of management (3rd ed.).
Cincinnati:
South-Western.
Gaya MLA
Haimann, Theo., Hilgert, Raymond, L..
"Supervision : concepts and pratices of management".
3rd ed.
Cincinnati:
South-Western,
1982.
Text.