Παραπομπή APA

Henry, J. G., & Heinke, G. W. (2012). Environmental science and engineering (2nd ed.). PHI Learning.

Παραπομπή Chicago Style

Henry, J Glynn, και Gary W. Heinke. Environmental Science and Engineering. 2nd ed. New Delhi: PHI Learning, 2012.

Παραπομπή MLA

Henry, J Glynn, και Gary W. Heinke. Environmental Science and Engineering. 2nd ed. PHI Learning, 2012.