Dyfyniad APA

Price, J. T. (1971). Origin and evolution of life. English Universities Press.

Dyfyniad Arddull Chicago

Price, John T. Origin and Evolution of Life. London: English Universities Press, 1971.

Dyfyniad MLA

Price, John T. Origin and Evolution of Life. English Universities Press, 1971.

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