Cita APA (7th ed.)

Black, P. E. (2001). Conservation of water and related land resources (3rd ed.). Lewis Publishers.

Cita Chicago (17th ed.)

Black, Peter E. Conservation of Water and Related Land Resources. 3rd ed. Boca Raton, Fla: Lewis Publishers, 2001.

Cita MLA (9th ed.)

Black, Peter E. Conservation of Water and Related Land Resources. 3rd ed. Lewis Publishers, 2001.

Atenció: Aquestes cites poden no estar 100% correctes.