Humenik, F. J., & Overcash, M. R. (1976). Design criteria for swine waste treatment systems. U.S. Environmental Protection Agency.
Cita Chicago (17th ed.)Humenik, Frank J., i Michael R. Overcash. Design Criteria for Swine Waste Treatment Systems. ADA, Oklahoma: U.S. Environmental Protection Agency, 1976.
Cita MLA (9th ed.)Humenik, Frank J., i Michael R. Overcash. Design Criteria for Swine Waste Treatment Systems. U.S. Environmental Protection Agency, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.