APA (7th ed.) Citation

Gibson, C. M., & Richards, I. (1957). First steps in reading English: A first book for readers to be. Pocket Books.

Chicago Style (17th ed.) Citation

Gibson, Christine M., and I.A Richards. First Steps in Reading English: A First Book for Readers to Be. New York: Pocket Books, 1957.

MLA (9th ed.) Citation

Gibson, Christine M., and I.A Richards. First Steps in Reading English: A First Book for Readers to Be. Pocket Books, 1957.