APA
Johnson D., Association for Computing Machinery & ACM Special Interest Group on Algorithms and Computation Theory. (1990). Proceedings of the first annual ACM-SIAM symposium on Discrete algorithms. Philadelphia, PA: Society for Industrial and Applied Mathematics.
Chicago
Johnson David, Association for Computing Machinery and ACM Special Interest Group on Algorithms and Computation Theory. 1990. Proceedings of the first annual ACM-SIAM symposium on Discrete algorithms. Philadelphia, PA: Society for Industrial and Applied Mathematics.
Harvard
Johnson D., Association for Computing Machinery and ACM Special Interest Group on Algorithms and Computation Theory. (1990). Proceedings of the first annual ACM-SIAM symposium on Discrete algorithms. Philadelphia, PA: Society for Industrial and Applied Mathematics.
MLA
Johnson David, Association for Computing Machinery and ACM Special Interest Group on Algorithms and Computation Theory. Proceedings of the first annual ACM-SIAM symposium on Discrete algorithms. Philadelphia, PA: Society for Industrial and Applied Mathematics. 1990.