एपीए उद्धरण

Schafer, W., & Oertel,Irmgard Graig,G Y. (1972). Ecology and palaecoecology of marine environments. Oliver&Boyd.

शिकागो स्टाइल उद्धरण

Schafer, Wilhelm, और Oertel,Irmgard Graig,G Y. Ecology and Palaecoecology of Marine Environments. Edinburgh: Oliver&Boyd, 1972.

एमएलए उद्धरण

Schafer, Wilhelm, और Oertel,Irmgard Graig,G Y. Ecology and Palaecoecology of Marine Environments. Oliver&Boyd, 1972.