Washington (State). Department of Ecology & Soltero, R. A. (1993). Comparison of non-point source phosphorus loading to the Spokane River from its headwaters to Long Lake, WA with that used in the Spokane River phosphorus attenuation model. s.n..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Washington (State). Department of Ecology و Raymond A. Soltero. Comparison of Non-point Source Phosphorus Loading to the Spokane River from Its Headwaters to Long Lake, WA with That Used in the Spokane River Phosphorus Attenuation Model. [S.l.: s.n., 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Washington (State). Department of Ecology و Raymond A. Soltero. Comparison of Non-point Source Phosphorus Loading to the Spokane River from Its Headwaters to Long Lake, WA with That Used in the Spokane River Phosphorus Attenuation Model. s.n., 1993.