Dyfyniad APA

(2014). Harvard Business Review January s/d April th. 2014. Harvard Business Review.

Dyfyniad Arddull Chicago

Harvard Business Review January S/d April Th. 2014. Harvard Business Review, 2014.

Dyfyniad MLA

Harvard Business Review January S/d April Th. 2014. Harvard Business Review, 2014.

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