Castro, O., & Kimbrough, V. (1979). In touch: A beginning American English series, student's book 1. N.Y.: Longman.
Trích dẫn kiểu ChicagoCastro, Oscar, và Victoria Kimbrough. In Touch: A Beginning American English Series, Student's Book 1. N.Y.: Longman, 1979.
MLA引文Castro, Oscar, và Victoria Kimbrough. In Touch: A Beginning American English Series, Student's Book 1. N.Y.: Longman, 1979.
警告：这些引文格式不一定是100％准确.