Dyfyniad APA

Feyman, R. (1965). The Character of Physical Law. Cambridge: M.I.T. Press.

Dyfyniad Arddull Chicago

Feyman, Richard. The Character of Physical Law. Cambridge: M.I.T. Press, 1965.

Dyfyniad MLA

Feyman, Richard. The Character of Physical Law. Cambridge: M.I.T. Press, 1965.

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