APA aipamena

Lewis, T. (1993). Empire of the air the men who made radio. New York: HarperPerennial.

Chicago Style aipamena

Lewis, Tom. Empire of the Air the Men Who Made Radio. New York: HarperPerennial, 1993.

MLA aipamena

Lewis, Tom. Empire of the Air the Men Who Made Radio. New York: HarperPerennial, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.