Gaya APA
PH.D, P, J, S. (2020).
BARRON'S TOEFL IBT : WITH 8 ONLINE PRACTICE TESTS (ED.17).
AMERIKA SERIKAT:
KAPLAN NORTH AMERICA.
Gaya MLA
PH.D, PAMELA, J., SHARPE,.
"BARRON'S TOEFL IBT : WITH 8 ONLINE PRACTICE TESTS".
ED.17
AMERIKA SERIKAT:
KAPLAN NORTH AMERICA,
2020.
Text.