APA (7th ed.) Zitazioa
New Strategist Publications, Inc. (2013). Who's buying by age (Seventh edition.). New Strategist Press.
Chicago Style (17th ed.) Zitazioa
New Strategist Publications, Inc. Who's Buying by Age. Seventh edition. Amityville, NY: New Strategist Press, 2013.
MLA (9th ed.) Zitazioa
New Strategist Publications, Inc. Who's Buying by Age. Seventh edition. New Strategist Press, 2013.
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