APA
Bank R. E., . (1998). PLTMG, a software package for solving elliptic partial differential equations : users' guide 8.0. Philadelphia, PA: Society for Industrial and Applied Mathematics.
Chicago
Bank Randolph E, . 1998. PLTMG, a software package for solving elliptic partial differential equations : users' guide 8.0. Philadelphia, PA: Society for Industrial and Applied Mathematics.
Harvard
Bank R. E., . (1998). PLTMG, a software package for solving elliptic partial differential equations : users' guide 8.0. Philadelphia, PA: Society for Industrial and Applied Mathematics.
MLA
Bank Randolph E, . PLTMG, a software package for solving elliptic partial differential equations : users' guide 8.0. Philadelphia, PA: Society for Industrial and Applied Mathematics. 1998.