Cita APA (7th ed.)

(2013). Ecological sustainability: Understanding complex issues / Robert B. Northrop, Anne N. Connor.

Cita Chicago (17th ed.)

Ecological Sustainability: Understanding Complex Issues / Robert B. Northrop, Anne N. Connor. 2013.

Cita MLA (9th ed.)

Ecological Sustainability: Understanding Complex Issues / Robert B. Northrop, Anne N. Connor. 2013.

Atenció: Aquestes cites poden no estar 100% correctes.