Dyfyniad APA

Harvard Business School. (2008). Going Green. HArvard Bus.School Pub.

Dyfyniad Arddull Chicago

Harvard Business School. Going Green. Boston: HArvard Bus.School Pub, 2008.

Dyfyniad MLA

Harvard Business School. Going Green. HArvard Bus.School Pub, 2008.

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