Παραπομπή APA

Christian, J. (1981). Management, Machines and Methods in Civil Engineering. John Wiley.

Παραπομπή Chicago Style

Christian, John. Management, Machines and Methods in Civil Engineering. New York: John Wiley, 1981.

Παραπομπή MLA

Christian, John. Management, Machines and Methods in Civil Engineering. John Wiley, 1981.