Cita APA (7a ed.)

Wachter, S. M., & Birch, E. L. (2008). Growing Greener Cities: Urban Sustainability in the Twenty-First Century. University of Pennsylvania Press.

Cita Chicago Style (17a ed.)

Wachter, Susan M., y Eugenie Ladner Birch. Growing Greener Cities: Urban Sustainability in the Twenty-First Century. Philadelphia: University of Pennsylvania Press, 2008.

Cita MLA (8a ed.)

Wachter, Susan M., y Eugenie Ladner Birch. Growing Greener Cities: Urban Sustainability in the Twenty-First Century. University of Pennsylvania Press, 2008.