Sharpe, P. J. (1994). Pass key to the TOEFL iBT: Test of English as a foreign language : internet-based test (6th ed.). United States of American: Barron's Educational Series, Inc.
Styl cytowania ChicagoSharpe, Pamela J. Pass Key to the TOEFL IBT: Test of English As a Foreign Language : Internet-based Test. 6th ed. United States of American: Barron's Educational Series, Inc, 1994.
Styl cytowania MLASharpe, Pamela J. Pass Key to the TOEFL IBT: Test of English As a Foreign Language : Internet-based Test. 6th ed. United States of American: Barron's Educational Series, Inc, 1994.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..