Παραπομπή σε μορφή APA (7η εκδ.)

WILLIAMSON, H. F. (1970). Economic Development Principles And Patterns Harold F Williamson And John A. Buttrics. Prentice-Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

WILLIAMSON, Harold F. Economic Development Principles And Patterns Harold F Williamson And John A. Buttrics. Prentice-Hall, 1970.

Παραπομπή σε μορφή MLA (8th εκδ.)

WILLIAMSON, Harold F. Economic Development Principles And Patterns Harold F Williamson And John A. Buttrics. Prentice-Hall, 1970.