Deismireacht APA

Enger, E. D., & Smith, B. F. (2000). Environmental science: A study of interrelationships (7th ed.). Boston, Mass: McGraw-Hill.

Trích dẫn kiểu Chicago

Enger, Eldon D., và Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 7th ed. Boston, Mass: McGraw-Hill, 2000.

Deismireacht MLA

Enger, Eldon D., và Bradley Fraser Smith. Environmental Science: A Study of Interrelationships. 7th ed. Boston, Mass: McGraw-Hill, 2000.

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