APA-viite

Goel, M. M., Purohit, N. K., & Sharm, M. C. (1999). Problems of Environment management in India.

Chicago-tyylinen lähdeviittaus

Goel, M M., N K. Purohit, ja M C. Sharm. Problems of Environment Management in India. Newdelhi, Anupriya publishing House, 1999.

MLA-viite

Goel, M M., et al. Problems of Environment Management in India. 1999.