توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Geological Survey (U.S.), New York (State). Conservation Dept, & Ayer, G. R. (1949). Progress report on the investigation of the effect of reforestation on stream flow in the State of New York. Geological Survey.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Geological Survey (U.S.), New York (State). Conservation Dept, و Gordon R. Ayer. Progress Report on the Investigation of the Effect of Reforestation on Stream Flow in the State of New York. Albany, N. Y.: Geological Survey, 1949.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Geological Survey (U.S.), et al. Progress Report on the Investigation of the Effect of Reforestation on Stream Flow in the State of New York. Geological Survey, 1949.