New York State College of Agriculture and Life Sciences, .Loehr, R. C., .Martin, C. S., & Rast, W. (1980). Phosphorus management strategies for lakes. Ann Arbor Science.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)New York State College of Agriculture and Life Sciences, Raymond C. .Loehr, Colleen S. .Martin, و Walter Rast. Phosphorus Management Strategies for Lakes. Ann Arbor, Mich.: Ann Arbor Science, 1980.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)New York State College of Agriculture and Life Sciences, et al. Phosphorus Management Strategies for Lakes. Ann Arbor Science, 1980.