Gaya APA

Hilgert, R, L., Haimann, T. (1991). Supervision : concepts and practices of management (5th ed.). Cincinnati: South Western.

Gaya MLA

Hilgert, Raymond, L.., Haimann, Theo. "Supervision : concepts and practices of management". 5th ed. Cincinnati: South Western, 1991. Buku/Printed Material.