एपीए उद्धरण

Bullen, K. E. (1975). Earth's density. Chapman & Hall.

शिकागो स्टाइल उद्धरण

Bullen, K E. Earth's Density. London: Chapman & Hall, 1975.

एमएलए उद्धरण

Bullen, K E. Earth's Density. Chapman & Hall, 1975.