APA استشهاد

Krier, J. E. (1971). Environmental law and policy: Readings , materials and notes on air pollution and related problems. Bobbs-Merril.

استشهاد بنمط شيكاغو

Krier, James E. Environmental Law and Policy: Readings , Materials and Notes on Air Pollution and Related Problems. New York: Bobbs-Merril, 1971.

MLA استشهاد

Krier, James E. Environmental Law and Policy: Readings , Materials and Notes on Air Pollution and Related Problems. Bobbs-Merril, 1971.