Cita APA (7a ed.)

Earth Pledge. (2005). Green roofs: Ecological design and construction. Schiffer.

Cita Chicago Style (17a ed.)

Earth Pledge. Green Roofs: Ecological Design and Construction. Atglen, PA: Schiffer, 2005.

Cita MLA (9a ed.)

Earth Pledge. Green Roofs: Ecological Design and Construction. Schiffer, 2005.