Castro, O., & Kimbrough, V. (1979). In touch: A beginning American English series, student's book 1. N.Y.: Longman.
استشهاد بنمط شيكاغوCastro, Oscar, و Victoria Kimbrough. In Touch: A Beginning American English Series, Student's Book 1. N.Y.: Longman, 1979.
MLA استشهادCastro, Oscar, و Victoria Kimbrough. In Touch: A Beginning American English Series, Student's Book 1. N.Y.: Longman, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.