APA
Randall C. W., Barnard J. L. & Stensel H. D. (1992). Design and retrofit of wastewater treatment plants for biological nutrient removal. Lancaster: Technomic Publishing Company.
Chicago
Randall Clifford W, Barnard James L and Stensel H David. 1992. Design and retrofit of wastewater treatment plants for biological nutrient removal. Lancaster: Technomic Publishing Company.
Harvard
Randall C. W., Barnard J. L. and Stensel H. D. (1992). Design and retrofit of wastewater treatment plants for biological nutrient removal. Lancaster: Technomic Publishing Company.
MLA
Randall Clifford W, Barnard James L and Stensel H David. Design and retrofit of wastewater treatment plants for biological nutrient removal. Lancaster: Technomic Publishing Company. 1992.