Dyfyniad APA

Sivaram, C., & Sastry, A. (2004). Introduction to astrobiology. University Press.

Dyfyniad Arddull Chicago

Sivaram, C., and Ajay Sastry. Introduction to Astrobiology. Hyderabad: University Press, 2004.

Dyfyniad MLA

Sivaram, C., and Ajay Sastry. Introduction to Astrobiology. University Press, 2004.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.