Dyfyniad APA

Harvard Business School. (2008). Harvard. Harvard Busines School.

Dyfyniad Arddull Chicago

Harvard Business School. Harvard. Boston: Harvard Busines School, 2008.

Dyfyniad MLA

Harvard Business School. Harvard. Harvard Busines School, 2008.

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