Peterson's. (2007). peterson's master toefl writing skills: Boost your toefl score! (First edition.). Peterson's.
Cita Chicago Style (17a ed.)Peterson's. Peterson's Master Toefl Writing Skills: Boost Your Toefl Score! First edition. Lawrenceville, NJ: Peterson's, 2007.
Cita MLA (9a ed.)Peterson's. Peterson's Master Toefl Writing Skills: Boost Your Toefl Score! First edition. Peterson's, 2007.
Precaución: Estas citas no son 100% exactas.