Cita APA (7th ed.)

Kangas, P. C. (2004). Ecological engineering: Principles and practice. Lewis Publishers.

Cita Chicago (17th ed.)

Kangas, Patrick C. Ecological Engineering: Principles and Practice. Boca Raton: Lewis Publishers, 2004.

Cita MLA (8th ed.)

Kangas, Patrick C. Ecological Engineering: Principles and Practice. Lewis Publishers, 2004.