Dyfyniad APA

Harvard Business Review Press. (2011). On Leadership. Harvard Business Review Press.

Dyfyniad Arddull Chicago

Harvard Business Review Press. On Leadership. Boston: Harvard Business Review Press, 2011.

Dyfyniad MLA

Harvard Business Review Press. On Leadership. Harvard Business Review Press, 2011.

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