Bell, G. d. (1970). The environmental handbook. New York: Ballantine Books, Inc.
Chicago Style CitationBell, Garrett de. The Environmental Handbook. New York: Ballantine Books, Inc, 1970.
Cita MLABell, Garrett de. The Environmental Handbook. New York: Ballantine Books, Inc, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.