Παραπομπή APA

Enrick, N. L. (1967). Management planning: A systems approach. Tata McGraw Hill.

Παραπομπή Chicago Style

Enrick, Nobert Lloyd. Management Planning: A Systems Approach. Bombay: Tata McGraw Hill, 1967.

Παραπομπή MLA

Enrick, Nobert Lloyd. Management Planning: A Systems Approach. Tata McGraw Hill, 1967.