Cita APA

Roberts, T. J., & T. J. Roberts. (2005). Field guide to the small mammals of Pakistan. Karachi: Oxford Univeristy Press.

Citación estilo Chicago

Roberts, T. J., y T. J. Roberts. Field Guide to the Small Mammals of Pakistan. Karachi: Oxford Univeristy Press, 2005.

Cita MLA

Roberts, T. J., y T. J. Roberts. Field Guide to the Small Mammals of Pakistan. Karachi: Oxford Univeristy Press, 2005.