APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.