Cita APA

Preston, R. (1991). American steel. New York: Prentice Hall Press.

Chicago Style Citation

Preston, Richard. American Steel. New York: Prentice Hall Press, 1991.

Cita MLA

Preston, Richard. American Steel. New York: Prentice Hall Press, 1991.

Atenció: Aquestes cites poden no estar 100% correctes.