Không rõ. (2003). Test preparation kit workbook TOEFL: Test of English as a foreign language 2002-2003. TR.
Chicago Style citaatKhông rõ. Test Preparation Kit Workbook TOEFL: Test of English As a Foreign Language 2002-2003. TR, 2003.
MLA citatieKhông rõ. Test Preparation Kit Workbook TOEFL: Test of English As a Foreign Language 2002-2003. TR, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.