Soars, J., & Soars, L. (1993). Headway: Intermediate Student"s Book&Pre-Intermediate Workbook. Oxford: Oxford University Press.
استشهاد بنمط شيكاغوSoars, John, و Liz Soars. Headway: Intermediate Student"s Book&Pre-Intermediate Workbook. Oxford: Oxford University Press, 1993.
MLA استشهادSoars, John, و Liz Soars. Headway: Intermediate Student"s Book&Pre-Intermediate Workbook. Oxford: Oxford University Press, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.