Geer, P. (2011). most up-to-date review and practice tests currently available: Geer, Philip.
Chicago-Zitierstil (17. Ausg.)Geer, Philip. Most Up-to-date Review and Practice Tests Currently Available: Geer, Philip. Barron's Educational Series, 2011.
MLA-Zitierstil (9. Ausg.)Geer, Philip. Most Up-to-date Review and Practice Tests Currently Available: Geer, Philip. 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.