APA引文

Harrison, N. (1991). How to design effective text-based open learning: A modular course. McGraw-Hill.

芝加哥风格引文

Harrison, Nigel. How to Design Effective Text-based Open Learning: A Modular Course. London: McGraw-Hill, 1991.

MLA引文

Harrison, Nigel. How to Design Effective Text-based Open Learning: A Modular Course. McGraw-Hill, 1991.

警告：这些引文格式不一定是100％准确.