Dyfyniad APA

Gitomer,Jeffrey. (2007). little red book of selling (NA.). Donnelley.

Dyfyniad Arddull Chicago

Gitomer,Jeffrey. Little Red Book of Selling. NA. China: Donnelley, 2007.

Dyfyniad MLA

Gitomer,Jeffrey. Little Red Book of Selling. NA. Donnelley, 2007.

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