Gibbs, M. J., Lewis, L., & Hoffman, J. S. (1989). Reducing methane emissions from livestock: Opportunities and issues. U.S. Environmental Protection Agency, Office of Air and Radiation.
Chicago Style (17th ed.) CitationGibbs, Michael J., Lisa Lewis, and John S. Hoffman. Reducing Methane Emissions from Livestock: Opportunities and Issues. Washington, D.C.: U.S. Environmental Protection Agency, Office of Air and Radiation, 1989.
MLA (9th ed.) CitationGibbs, Michael J., et al. Reducing Methane Emissions from Livestock: Opportunities and Issues. U.S. Environmental Protection Agency, Office of Air and Radiation, 1989.
Warning: These citations may not always be 100% accurate.