Dyfyniad APA
New Strategist Publications, Inc. (2013). Who's buying by age (Seventh edition.). New Strategist Press.
Dyfyniad Arddull Chicago
New Strategist Publications, Inc. Who's Buying by Age. Seventh edition. Amityville, NY: New Strategist Press, 2013.
Dyfyniad MLA
New Strategist Publications, Inc. Who's Buying by Age. Seventh edition. New Strategist Press, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.