एपीए उद्धरण

Nichols, G. (2009). Sedimentology and stratigraphy. Ed.2. Wiley-Blackwell.

शिकागो स्टाइल उद्धरण

Nichols, Gary. Sedimentology and Stratigraphy. Ed.2. Wiley-Blackwell, 2009.

एमएलए उद्धरण

Nichols, Gary. Sedimentology and Stratigraphy. Ed.2. Wiley-Blackwell, 2009.