(2015). Who's buying by age: = By age (9th edition.). New Strategist Press, LLC.
Chicago-Zitierstil (17. Ausg.)Who's Buying by Age: = By Age. 9th edition. Amityville: New Strategist Press, LLC, 2015.
MLA-Zitierstil (9. Ausg.)Who's Buying by Age: = By Age. 9th edition. New Strategist Press, LLC, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.