Cita APA (7th ed.)
Walker, R. (2007). The country in the city: The greening of the San Francisco Bay Area. University of Washington Press.
Cita Chicago (17th ed.)
Walker, Richard. The Country in the City: The Greening of the San Francisco Bay Area. Seattle: University of Washington Press, 2007.
Cita MLA (9th ed.)
Walker, Richard. The Country in the City: The Greening of the San Francisco Bay Area. University of Washington Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.