APA (7. basım) Alıntı

ETS. (2021). The Official Guide th the TOEFL i BT. McGrawhill.

Chicago Style (17. basım) Atıf

ETS. The Official Guide Th the TOEFL I BT. New York: McGrawhill, 2021.

MLA (9th ed.) Atıf

ETS. The Official Guide Th the TOEFL I BT. McGrawhill, 2021.