Gaya APA

Winter, D, D, N., Koger, S, M. (2004). The Psychology of environmental problems (2nd ed). New Jersey: Lawrence Erlbaum Associates.

Gaya MLA

Winter, Deborah, Du, Nann., Koger, Susan, M.. "The Psychology of environmental problems". 2nd ed New Jersey: Lawrence Erlbaum Associates, 2004. Text.