Cita APA (7th ed.)

Joseph, K. (2004). Essentials of environmental studies. Pearson Education.

Cita Chicago (17th ed.)

Joseph, Kurian. Essentials of Environmental Studies. Delhi: Pearson Education, 2004.

Cita MLA (9th ed.)

Joseph, Kurian. Essentials of Environmental Studies. Pearson Education, 2004.