Postman, A. . .. (1987). Using HAL: A guide to achieving greater productivity with lotus 1 - 2- 3`s companion product. Mc-Graw Hill.
Chicago Edition CitationPostman, Andrew. Using HAL: A Guide to Achieving Greater Productivity with Lotus 1 - 2- 3`s Companion Product. Berkeley: Mc-Graw Hill, 1987.
MLA Edition CitationPostman, Andrew. Using HAL: A Guide to Achieving Greater Productivity with Lotus 1 - 2- 3`s Companion Product. Mc-Graw Hill, 1987.
Warning: These citations may not always be 100% accurate.