APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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