Cita APA (7th ed.)

Blanchfield, D. S. (2011). Environmental encyclopedia (4th ed.). Cengage Learning.

Cita Chicago (17th ed.)

Blanchfield, Deirdre S. Environmental Encyclopedia. 4th ed. Detroit: Cengage Learning, 2011.

Cita MLA (9th ed.)

Blanchfield, Deirdre S. Environmental Encyclopedia. 4th ed. Cengage Learning, 2011.