Enger, E. D., & Smith, B. F. (2000). Environmental science: A study of interrelationships (7th ed.). Boston, Mass: McGraw-Hill.
Chicago-стиль цитированияEnger, Eldon D., và Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 7th ed. Boston, Mass: McGraw-Hill, 2000.
MLA-цитированиеEnger, Eldon D., và Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 7th ed. Boston, Mass: McGraw-Hill, 2000.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.