Oregon State University. Extension Service, Washington State University. Cooperative Extension Service, Washington State University. Cooperative Extension, University of Idaho. Cooperative Extension Service, & University of Idaho. Cooperative Extension System. (1985). Pacific Northwest weed control handbook. [Extension Services of Oregon State University, Washington State University, and the University of Idaho].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Oregon State University. Extension Service, Washington State University. Cooperative Extension Service, Washington State University. Cooperative Extension, University of Idaho. Cooperative Extension Service, و University of Idaho. Cooperative Extension System. Pacific Northwest Weed Control Handbook. Corvallis, Or.: [Extension Services of Oregon State University, Washington State University, and the University of Idaho], 1985.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Oregon State University. Extension Service, et al. Pacific Northwest Weed Control Handbook. [Extension Services of Oregon State University, Washington State University, and the University of Idaho], 1985.