APA সাইটেশন

Heller, R. (1976). Once and Future Manager. Associated Business Programs.

শিকাগো স্টাইলে সাইটেশন

Heller, Robert. Once and Future Manager. London: Associated Business Programs, 1976.

এমএলএ সাইটেশন

Heller, Robert. Once and Future Manager. Associated Business Programs, 1976.