APA استشهاد

Hodges, L. (1977). Environmental Pollution (2nd.). Holt, Rinehart and Winston, Inc.

استشهاد بنمط شيكاغو

Hodges, Lawrent. Environmental Pollution. 2nd. New York: Holt, Rinehart and Winston, Inc, 1977.

MLA استشهاد

Hodges, Lawrent. Environmental Pollution. 2nd. Holt, Rinehart and Winston, Inc, 1977.