ETHERTON, A. (1977). Contact 3: A secondary english course.-- Ed.Revised. Longman.
Chicago Style (17th ed.) CitationETHERTON, A.R.B. Contact 3: A Secondary English Course.-- Ed.Revised. Kuala Lumpur: Longman, 1977.
MLA引文ETHERTON, A.R.B. Contact 3: A Secondary English Course.-- Ed.Revised. Longman, 1977.
警告:這些引文格式不一定是100%准確.