Dyfyniad APA

Rutten, M. G. (1971). Origin of life by natural causes. Elsevier publishing.

Dyfyniad Arddull Chicago

Rutten, M. G. Origin of Life by Natural Causes. New york: Elsevier publishing, 1971.

Dyfyniad MLA

Rutten, M. G. Origin of Life by Natural Causes. Elsevier publishing, 1971.

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