Pamela J Sharpe. (2014). Barron's Toefl IBT: Internet based test (14th.). Galgotia publications.
Chicago Style aipamenaPamela J Sharpe. Barron's Toefl IBT: Internet Based Test. 14th. Galgotia publications, 2014.
MLA aipamenaPamela J Sharpe. Barron's Toefl IBT: Internet Based Test. 14th. Galgotia publications, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.