Cita APA

Cunninggham, W. P. (1999). Environmental science. WCB/McGraw-Hill.

Chicago Style Citation

Cunninggham, William P. Environmental Science. WCB/McGraw-Hill, 1999.

Cita MLA

Cunninggham, William P. Environmental Science. WCB/McGraw-Hill, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.