Gaya APA

Eaton, A, D. et al (1994). Standard Methods; 18th Edition Supplement; for the Examination of Water and Wastewater (1994). Unley, South Australia: Standards & Technical Pubication.

Gaya MLA

Eaton, Andrew, D.. et al. "Standard Methods; 18th Edition Supplement; for the Examination of Water and Wastewater". 1994 Unley, South Australia: Standards & Technical Pubication, 1994. Text.