Cita APA

O'Neill, R., & Kingsbury, R. (1974). Kernel lessons Plus: A post-intermediate course : tests : students' book ([2nd. imp.].). London: Longman.

Citación estilo Chicago

O'Neill, Robert, and Roy Kingsbury. Kernel Lessons Plus: A Post-intermediate Course : Tests : Students' Book. [2nd. imp.]. London: Longman, 1974.

Cita MLA

O'Neill, Robert, and Roy Kingsbury. Kernel Lessons Plus: A Post-intermediate Course : Tests : Students' Book. [2nd. imp.]. London: Longman, 1974.