Cita APA (7th ed.)

Willis, G. (2018). Permaculture: Principles and practice (1a. ed.). Larsen and Keller Education.

Cita Chicago (17th ed.)

Willis, George. Permaculture: Principles and Practice. 1a. ed. Nueva York: Larsen and Keller Education, 2018.

Cita MLA (9th ed.)

Willis, George. Permaculture: Principles and Practice. 1a. ed. Larsen and Keller Education, 2018.