Cita APA (7a ed.)

Johnson, L., & Powell, F. M. (2016). Environmental law. Cengage Learning.

Cita Chicago Style (17a ed.)

Johnson, Lisa, y Frona M. Powell. Environmental Law. Boston, MA: Cengage Learning, 2016.

Cita MLA (9a ed.)

Johnson, Lisa, y Frona M. Powell. Environmental Law. Cengage Learning, 2016.