Gaya APA
James, H. et al. (2014).
McGraw-Hill Education GMAT Premium 2015: Total Test-Preparation Program .
:
McGraw-Hill Education.
Gaya MLA
Hasik, James. et al.
"McGraw-Hill Education GMAT Premium 2015: Total Test-Preparation Program".
:
McGraw-Hill Education,
2014.
Textbook.