SHARPE, P. J. (1986). Barron's How To Prepare For The Toefl Test Of English As A Foreign Language / Goo. Barron's educational series.
Παραπομπή σε μορφή Chicago (17η εκδ.)SHARPE, Pamela J. Barron's How To Prepare For The Toefl Test Of English As A Foreign Language / Goo. Barron's educational series, 1986.
Παραπομπή σε μορφή MLA (8th εκδ.)SHARPE, Pamela J. Barron's How To Prepare For The Toefl Test Of English As A Foreign Language / Goo. Barron's educational series, 1986.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.