APA Style

Culp, G, L., Culp, R, L. (1971). Advanced Wastewater Treatment (Cet.4). New York: Van Nostrand Reinhold Company..

MLA Style

Culp, Gordon, L.., Culp, Russell, L.. "Advanced Wastewater Treatment". Cet.4 New York: Van Nostrand Reinhold Company., 1971. Text.