Koffman, E. B. (1987). Problem solving and structured programming in Fortran 77. Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Koffman, Elliot B. Problem Solving and Structured Programming in Fortran 77. Addison-Wesley, 1987.
Lua MLA (9ú heag.)Koffman, Elliot B. Problem Solving and Structured Programming in Fortran 77. Addison-Wesley, 1987.
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