Cita APA

O'Neill, R., & Kingsbury, R. (1974). Kernel lessons Plus: A post-intermediate course : tests : teacher's book. London: Longman.

Citación estilo Chicago

O'Neill, Robert, and Roy Kingsbury. Kernel Lessons Plus: A Post-intermediate Course : Tests : Teacher's Book. London: Longman, 1974.

Cita MLA

O'Neill, Robert, and Roy Kingsbury. Kernel Lessons Plus: A Post-intermediate Course : Tests : Teacher's Book. London: Longman, 1974.