APA (7th ed.) Citation

Sweet, H. (1964). The practical study of languages: A guide for teachers and learners. Oxford University Press.

Chicago Style (17th ed.) Citation

Sweet, Henry. The Practical Study of Languages: A Guide for Teachers and Learners. London: Oxford University Press, 1964.

MLA (8th ed.) Citation

Sweet, Henry. The Practical Study of Languages: A Guide for Teachers and Learners. Oxford University Press, 1964.