Dyfyniad APA

HBR. (2006). Harvard business review. Harvard business school.

Dyfyniad Arddull Chicago

HBR. Harvard Business Review. Boston: Harvard business school, 2006.

Dyfyniad MLA

HBR. Harvard Business Review. Harvard business school, 2006.

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