Gaya APA
Rogers, B., Roehr, S. (2007).
The complete guide to the TOEFL test, iBT : audio script and answer key (iBT ed.).
Boston:
Thomson.
Gaya MLA
Rogers, Bruce., Roehr, Sherrise.
"The complete guide to the TOEFL test, iBT : audio script and answer key".
iBT ed.
Boston:
Thomson,
2007.
Text.