International Symposium on Ecology and Revegetation of Drastically Disturbed Areas, University Park, Pa, Pennsylvania State University. School of Forest Resources, Northeastern Forest Experiment Station (Broomall, Pa.), Hutnik, R. J., & Davis, G. (1973). Ecology and reclamation of devastated land. Gordon and Breach.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Symposium on Ecology and Revegetation of Drastically Disturbed Areas, University Park, Pa, Pennsylvania State University. School of Forest Resources, Pa.) Northeastern Forest Experiment Station (Broomall, R. J. Hutnik, و Grant Davis. Ecology and Reclamation of Devastated Land. New York: Gordon and Breach, 1973.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Symposium on Ecology and Revegetation of Drastically Disturbed Areas, University Park, Pa, et al. Ecology and Reclamation of Devastated Land. Gordon and Breach, 1973.