Cita APA

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

Citación estilo Chicago

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

Cita MLA

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