APA

Bowler P. J., Porter R., . (1993). The norton history of the environmental sciences. New York: W.W. Norton & Company.

Chicago

Bowler Peter J, Porter Roy, . 1993. The norton history of the environmental sciences. New York: W.W. Norton & Company.

Harvard

Bowler P. J., Porter R., . (1993). The norton history of the environmental sciences. New York: W.W. Norton & Company.

MLA

Bowler Peter J, Porter Roy, . The norton history of the environmental sciences. New York: W.W. Norton & Company. 1993.