एपीए उद्धरण

Ley, W. (1969). Rockets, Missiles an men in Space. New American Library.

शिकागो स्टाइल उद्धरण

Ley, Willy. Rockets, Missiles an Men in Space. New York: New American Library, 1969.

एमएलए उद्धरण

Ley, Willy. Rockets, Missiles an Men in Space. New American Library, 1969.