Cita APA

O'Neill, R., Yeadon, T., & Kingsbury, R. (1974). Kernel lessons intermediate: Student's book ([7th. imp,].). London: Longman.

Citación estilo Chicago

O'Neill, Robert, Tony Yeadon, and Roy Kingsbury. Kernel Lessons Intermediate: Student's Book. [7th. imp,]. London: Longman, 1974.

Cita MLA

O'Neill, Robert, Tony Yeadon, and Roy Kingsbury. Kernel Lessons Intermediate: Student's Book. [7th. imp,]. London: Longman, 1974.