Letey, J., Osborn, J. F., & Valoras, N. (1975). Soil water repellency and the use of nonionic surfactants. California Water Resources Center, University of California.
Chicago Style (17th ed.) CitationLetey, John, J. F. Osborn, and N. Valoras. Soil Water Repellency and the Use of Nonionic Surfactants. Davis: California Water Resources Center, University of California, 1975.
MLA (9th ed.) CitationLetey, John, et al. Soil Water Repellency and the Use of Nonionic Surfactants. California Water Resources Center, University of California, 1975.
Warning: These citations may not always be 100% accurate.