Cita APA

Daniels, R. R. J., & Krishnaswamy, J. (2009). Environmental studies.

Citación estilo Chicago

Daniels, Ranjit R J., y Jagdish Krishnaswamy. Environmental Studies. Newyork, Jhonwiley&Sons, 2009.

Cita MLA

Daniels, Ranjit R J., y Jagdish Krishnaswamy. Environmental Studies. 2009.