Enger, E. D., Bockarie, A. T., & Smith, B. F. (2006). Environmental science: A study of interrelationships (10th ed.). Boston: McGraw-Hill.
استشهاد بنمط شيكاغوEnger, Eldon D., Anne Todd Bockarie, و Bradley F. Smith. Environmental Science: A Study of Interrelationships. 10th ed. Boston: McGraw-Hill, 2006.
MLA استشهادEnger, Eldon D., Anne Todd Bockarie, و Bradley F. Smith. Environmental Science: A Study of Interrelationships. 10th ed. Boston: McGraw-Hill, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.