Cita APA (7th ed.)

Kaufman, R. K., & Cleveland, C. J. (2008). Environmental science. McGraw-Hill Higher Education.

Cita Chicago (17th ed.)

Kaufman, Robert K., i Cutler J. Cleveland. Environmental Science. Boston: McGraw-Hill Higher Education, 2008.

Cita MLA (9th ed.)

Kaufman, Robert K., i Cutler J. Cleveland. Environmental Science. McGraw-Hill Higher Education, 2008.