APA

Schroeder J. A., . (2007). Comparing in Nature. Pleham, New York: Benchmark Education Co.

Chicago

Schroeder Jamie A, . 2007. Comparing in Nature. Pleham, New York: Benchmark Education Co.

Harvard

Schroeder J. A., . (2007). Comparing in Nature. Pleham, New York: Benchmark Education Co.

MLA

Schroeder Jamie A, . Comparing in Nature. Pleham, New York: Benchmark Education Co. 2007.