1. Association of American Publishers. (1986).Reference manual for markup of electronic manuscripts.
2. Barnard, D.T., Fraser, A. and Logan, G. (1988). Generalized markup for literary text.Literary and Linguistic Computing. 13:(11), pp. 26–31.
3. Barron, D. (1989). Why use SGML?Electronic Publishing. 2:(1), pp. 3–24.
4. Bryan, M. (1988).The author’s guide to SGML. New York: Addison-Wesley.
5. Author/Editor. (1989). SoftQuad Author/Editor, version 1.1. Toronto.