APA
Spellman, . (2014). Mathematics Manual for Water and Wastewater Treatment Plant Operators: Wastewater Treatment Operations. London: T&F.
Chicago
Spellman, . 2014. Mathematics Manual for Water and Wastewater Treatment Plant Operators: Wastewater Treatment Operations. London: T&F.
Harvard
Spellman, . (2014). Mathematics Manual for Water and Wastewater Treatment Plant Operators: Wastewater Treatment Operations. London: T&F.
MLA
Spellman, . Mathematics Manual for Water and Wastewater Treatment Plant Operators: Wastewater Treatment Operations. London: T&F. 2014.