APA استشهاد

Steg, L., & de Groot, J. I. M. (2019). Environmental psychology: An introduction (Second edition.). Wl-iley &Sons.

استشهاد بنمط شيكاغو

Steg, Linda, و Judith I. M. de Groot. Environmental Psychology: An Introduction. Second edition. U K: Wl-iley &Sons, 2019.

MLA استشهاد

Steg, Linda, و Judith I. M. de Groot. Environmental Psychology: An Introduction. Second edition. Wl-iley &Sons, 2019.