O'neill, R. (1982). Kernel Two: Teacher's Book. London: Longman.
Trích dẫn kiểu ChicagoO'neill, Robert. Kernel Two: Teacher's Book. London: Longman, 1982.
MLA引文O'neill, Robert. Kernel Two: Teacher's Book. London: Longman, 1982.
警告：這些引文格式不一定是100％准確.