Dyfyniad APA

RIES, A. (1991). Harse sense: The key to success is.. McGraw-Hill.

Dyfyniad Arddull Chicago

RIES, Al. Harse Sense: The Key to Success Is.. New York: McGraw-Hill, 1991.

Dyfyniad MLA

RIES, Al. Harse Sense: The Key to Success Is.. McGraw-Hill, 1991.

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