Gaya APA

Swanson, C, P., Soule, M, E. (1986). Conservation biology the science of scarcity and diversity . Massachusetts: Massachusetts: Sinauer Associates; 1986.

Gaya MLA

Swanson, Carl, P.., Soule, Michael, E.. "Conservation biology the science of scarcity and diversity". Massachusetts: Massachusetts: Sinauer Associates; 1986, 1986. Text.