Παραπομπή APA

Williamson, H. F., & Buttrick, J. A. (1964). Economic development and principles. Prentice Hall of India.

Παραπομπή Chicago Style

Williamson, Harold F., και John A. Buttrick. Economic Development and Principles. New Delhi: Prentice Hall of India, 1964.

Παραπομπή MLA

Williamson, Harold F., και John A. Buttrick. Economic Development and Principles. Prentice Hall of India, 1964.