Allen, E. F. How to write and speak effective english. A modern guide to good form.
Chicago Style (17th ed.) CitationAllen, Edward Frank. How to Write and Speak Effective English. A Modern Guide to Good Form.
MLA引文Allen, Edward Frank. How to Write and Speak Effective English. A Modern Guide to Good Form.
警告：這些引文格式不一定是100％准確.