APA (7th ed.) Citation

O'Neill, R., Yeadon, T., & Kingsbury, R. (1973). Kernel lessons intermediate: Tests : teacher's book ([1973 new imp.].). Longman.

Chicago Style (17th ed.) Citation

O'Neill, Robert, Tony Yeadon, and Roy Kingsbury. Kernel Lessons Intermediate: Tests : Teacher's Book. [1973 new imp.]. London: Longman, 1973.

MLA (9th ed.) Citation

O'Neill, Robert, et al. Kernel Lessons Intermediate: Tests : Teacher's Book. [1973 new imp.]. Longman, 1973.