| Using 1-2-3 Special Edition, Que Corp., 1987, pp. 12-35, 46-56-66-69, 78-80, 98-101, 274-278 and 756-757. |
| Foley and Van Dam, Fundamentals of Interactive Computer Graphics, 1982, pp. 55-61 and 222-234. |
| Poole, Lon, Your Atari Computer, Osborne/McGraw-Hill, 1982, pp. 405-411. |
| Butterworth, "Forms Definition Method", 5th Phoenix Conference on Computers and Communications Mar. 26-28, 1986. |
| Meyers, "A Taxonomy of Window Manager User Interfaces", IEEE Computer Graphics & Applications, pp. 65-84 (Sep. 1988). |
| Scheifler et al., "The X Window System", ACM Transactions on Graphics, vol. 5, No. 2, pp. 79-109 (Apr. 1986). |