Dyfyniad APA

Whitehead, G. (1969). Commerce: Made simple. W.H Allen and co.

Dyfyniad Arddull Chicago

Whitehead, G.M. Commerce: Made Simple. London: W.H Allen and co, 1969.

Dyfyniad MLA

Whitehead, G.M. Commerce: Made Simple. W.H Allen and co, 1969.

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