Παραπομπή APA

Alexander, W., & Street, A. (1976). Metals in the Service of Man (6th ed.). Penguin Books.

Παραπομπή Chicago Style

Alexander, William, και Arthur Street. Metals in the Service of Man. 6th ed. England: Penguin Books, 1976.

Παραπομπή MLA

Alexander, William, και Arthur Street. Metals in the Service of Man. 6th ed. Penguin Books, 1976.