Gaya APA

Weiler, S, K., Scholz-Barth, K. (2009). Green roof system : a guide to the planning, design, and construction of landscapes over structure . New Jersey: John Willey & Sons.

Gaya MLA

Weiler, Susan, K.., Scholz-Barth, Katrin. "Green roof system : a guide to the planning, design, and construction of landscapes over structure". New Jersey: John Willey & Sons, 2009. Text.