Παραπομπή APA

Eaton( Andrew D.) et al. (2005). Standard methods for the examination of water and waste water (21.).

Παραπομπή Chicago Style

Eaton( Andrew D.) et al. Standard Methods for the Examination of Water and Waste Water. 21. American Public Health Association, 2005.

Παραπομπή MLA

Eaton( Andrew D.) et al. Standard Methods for the Examination of Water and Waste Water. 21. 2005.