APA (7th ed.) Citation
Castro, O., & Kimbrough, V. (1979). In touch: A beginning American English series. Student's book. Longman.
Chicago Style (17th ed.) Citation
Castro, Oscar, and Victoria Kimbrough. In Touch: A Beginning American English Series. Student's Book. White Plains, N.Y.: Longman, 1979.
MLA (9th ed.) Citation
Castro, Oscar, and Victoria Kimbrough. In Touch: A Beginning American English Series. Student's Book. Longman, 1979.
Warning: These citations may not always be 100% accurate.