International Workshop on Software Specification and Design Pittsburgh, Pennsylvania, IEEE Computer Society, & ACM Sigsoft. (1989). Proceedings Fifth International Workshop on Software Specification and Design. IEEE Computer Society Press.

International Workshop on Software Specification and Design Pittsburgh, Pennsylvania, IEEE Computer Society, and ACM Sigsoft. Proceedings Fifth International Workshop on Software Specification and Design. Washington, D.C.: IEEE Computer Society Press, 1989.

International Workshop on Software Specification and Design Pittsburgh, Pennsylvania, et al. Proceedings Fifth International Workshop on Software Specification and Design. IEEE Computer Society Press, 1989.