APA

Enger E. D., Smith B. F., . (2016). Environmental science. New York: McGraw-Hill Education.

Chicago

Enger Eldon D, Smith Bradley F, . 2016. Environmental science. New York: McGraw-Hill Education.

Harvard

Enger E. D., Smith B. F., . (2016). Environmental science. New York: McGraw-Hill Education.

MLA

Enger Eldon D, Smith Bradley F, . Environmental science. New York: McGraw-Hill Education. 2016.