APA aipamena

Ley, W. (1950). The conquest of space. New York: The Viking Press.

Chicago Style aipamena

Ley, Willy. The Conquest of Space. New York: The Viking Press, 1950.

MLA aipamena

Ley, Willy. The Conquest of Space. New York: The Viking Press, 1950.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.