एपीए उद्धरण

Gould, S. J. (2002). I have landed: Splashes and reflections in natural history. Vintage.

शिकागो स्टाइल उद्धरण

Gould, Stephen Jay. I Have Landed: Splashes and Reflections in Natural History. London: Vintage, 2002.

एमएलए उद्धरण

Gould, Stephen Jay. I Have Landed: Splashes and Reflections in Natural History. Vintage, 2002.