Cita APA

O Neill, R. (1974). Kernel lessons plus: A post-intermediate course teacher's book. Longman.

Citación estilo Chicago

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

Cita MLA

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