APA (7th ed.) Citation

O'Neill, R., Yeadon, T., & Kingsbury, R. (1971). Kernel lessons intermediate: Tests : students' book ([2nd. imp.].). Longman.

Chicago Style (17th ed.) Citation

O'Neill, Robert, Tony Yeadon, and Roy Kingsbury. Kernel Lessons Intermediate: Tests : Students' Book. [2nd. imp.]. London: Longman, 1971.

MLA (9th ed.) Citation

O'Neill, Robert, et al. Kernel Lessons Intermediate: Tests : Students' Book. [2nd. imp.]. Longman, 1971.