APA-viite

Purves, W. K. (1995). Life: The science of biology (4th ed.). Sinaver Associates Inc..

Chicago-tyylinen lähdeviittaus

Purves, William K. Life: The Science of Biology. 4th ed. Sunderland: Sinaver Associates Inc., 1995.

MLA-viite

Purves, William K. Life: The Science of Biology. 4th ed. Sinaver Associates Inc., 1995.