एपीए उद्धरण

Turnill, R. (1978). Observer's Book of Manned Spaceflight. Frederick Warne.

शिकागो स्टाइल उद्धरण

Turnill, Reginald. Observer's Book of Manned Spaceflight. London: Frederick Warne, 1978.

एमएलए उद्धरण

Turnill, Reginald. Observer's Book of Manned Spaceflight. Frederick Warne, 1978.