एपीए उद्धरण

Langton, N. (1969). space environment. University of London press.

शिकागो स्टाइल उद्धरण

Langton, N.H. Space Environment. London: University of London press, 1969.

एमएलए उद्धरण

Langton, N.H. Space Environment. University of London press, 1969.