APA-referens

Balakrishnan, M., & Alexander, K. M. (1988). Environmental issues: Problems and solutions. University of Kerala.

Chicago-stil citat

Balakrishnan, M., och K. M. Alexander. Environmental Issues: Problems and Solutions. Thiruvananthapuram: University of Kerala, 1988.

MLA-referens

Balakrishnan, M., och K. M. Alexander. Environmental Issues: Problems and Solutions. University of Kerala, 1988.