Gaya APA

O\'Neill, R., Kingsbury, R. (1974). Kernel Lessons Plus : A post-intermediate course ; Teacher's Book . Sebastopol, CA: Longman & Eurozentre.

Gaya MLA

O\'Neill, Robert., Kingsbury, Roy. "Kernel Lessons Plus : A post-intermediate course ; Teacher's Book". Sebastopol, CA: Longman & Eurozentre, 1974. Textbook.