Dyfyniad APA

Susan Visvanathan. (2007). Phosphorous and stone. Penguin Books.

Dyfyniad Arddull Chicago

Susan Visvanathan. Phosphorous and Stone. New Delhi: Penguin Books, 2007.

Dyfyniad MLA

Susan Visvanathan. Phosphorous and Stone. Penguin Books, 2007.

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