Cita APA (7th ed.)

Hilgert, R. L., & Leonard, E. C. (1998). Supervision: Concepts and practices of management. South-Western College.

Cita Chicago (17th ed.)

Hilgert, Raymond L., i Edwin C. Leonard. Supervision: Concepts and Practices of Management. Ohio: South-Western College, 1998.

Cita MLA (9th ed.)

Hilgert, Raymond L., i Edwin C. Leonard. Supervision: Concepts and Practices of Management. South-Western College, 1998.