Vanessa Jakeman. (2002). BEC vantage pratice tests: Four tests for the Cambridge Business English Certificate (upper intermediate) with answers. Oxford, NY: Oxford Univ. Press.
استشهاد بنمط شيكاغوVanessa Jakeman. BEC Vantage Pratice Tests: Four Tests for the Cambridge Business English Certificate (upper Intermediate) With Answers. Oxford, NY: Oxford Univ. Press, 2002.
MLA استشهادVanessa Jakeman. BEC Vantage Pratice Tests: Four Tests for the Cambridge Business English Certificate (upper Intermediate) With Answers. Oxford, NY: Oxford Univ. Press, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.