Dyfyniad APA

(2008). Making change stick. Boston, Mass: Harvard Business Press.

Dyfyniad Arddull Chicago

Making Change Stick. Boston, Mass: Harvard Business Press, 2008.

Dyfyniad MLA

Making Change Stick. Boston, Mass: Harvard Business Press, 2008.

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