APA citiranje

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

Trích dẫn kiểu Chicago

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

MLA citiranje

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

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