APA

United States, United States & United States. (1968). Water and wastewater technology: a suggested 2-year post high school curriculum. [Washington]: U.S. Office of Education; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.

Chicago

United States, United States and United States. 1968. Water and wastewater technology: a suggested 2-year post high school curriculum. [Washington]: U.S. Office of Education; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.

Harvard

United States, United States and United States. (1968). Water and wastewater technology: a suggested 2-year post high school curriculum. [Washington]: U.S. Office of Education; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.

MLA

United States, United States and United States. Water and wastewater technology: a suggested 2-year post high school curriculum. [Washington]: U.S. Office of Education; [for sale by the Supt. of Docs., U.S. Govt. Print. Off. 1968.