GARTSIDE, L. (1989). Modern business correspondence.-- ed.4. Binarupa Aksara.
芝加哥风格引文GARTSIDE, L. Modern Business Correspondence.-- Ed.4. Jakarta: Binarupa Aksara, 1989.
MLA引文GARTSIDE, L. Modern Business Correspondence.-- Ed.4. Binarupa Aksara, 1989.
警告：这些引文格式不一定是100％准确.