एपीए उद्धरण

Ponnamperuma, C. (1972). Origins of life. Thames Hudson.

शिकागो स्टाइल उद्धरण

Ponnamperuma, Cyril. Origins of Life. London: Thames Hudson, 1972.

एमएलए उद्धरण

Ponnamperuma, Cyril. Origins of Life. Thames Hudson, 1972.