Παραπομπή APA

Poehls, D., & Smith, G. J. (2009). Encyclopedic dictionary of Hydrogeology. Elsevier.

Παραπομπή Chicago Style

Poehls, D.J, και Gregory J. Smith. Encyclopedic Dictionary of Hydrogeology. Oxford: Elsevier, 2009.

Παραπομπή MLA

Poehls, D.J, και Gregory J. Smith. Encyclopedic Dictionary of Hydrogeology. Elsevier, 2009.