U. S. Environmental Protection Agency. (1983). Process design manual for land application of municipal sludge (1a. ed.). U. S. Environmental Protection Agency.
Chicago-Zitierstil (17. Ausg.)U. S. Environmental Protection Agency. Process Design Manual for Land Application of Municipal Sludge. 1a. ed. Cincinnati: U. S. Environmental Protection Agency, 1983.
MLA-Zitierstil (9. Ausg.)U. S. Environmental Protection Agency. Process Design Manual for Land Application of Municipal Sludge. 1a. ed. U. S. Environmental Protection Agency, 1983.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.