Dyfyniad APA

Newton, R. G. (1993). What makes nature tick? Harvard University Press; Universities Press.

Dyfyniad Arddull Chicago

Newton, Roger G. What Makes Nature Tick? Cambridge, Mass. : India: Harvard University Press; Universities Press, 1993.

Dyfyniad MLA

Newton, Roger G. What Makes Nature Tick? Harvard University Press; Universities Press, 1993.

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