Cheung, D. (1988). Communication needs of Engineers: Survey and analysis. MimeographedSingapore: Nanyang Technological Institute.
2.
Herrick, M.J. (1986). A survey of grammar in business communication . The Bulletin of the Association for Business Communication , 49(4), 9-13.
3.
Higgins, J., & Johns, T. (1984). Computers in language learning. London: Collins.
4.
Southwell, M.G. (1984). The comp-lab writing modules: Computer-assisted grammar instruction. In Wresch (Ed.), The Computer in Composition Instruction: A Writer's Tool, pp. 91-103. Urbana, IL: National Council of Teachers of English .
5.
Waltman, J.L., & Smeltzer, L.R. (1988). Do good grammar skills predict success in a business communication course? The Journal of Business Communication, 2(2), 59-69.