D.M, E. (1984). Problem solving with structured FORTRAN 77. The Benjamin/Cummings Pub. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रD.M, Etter. Problem Solving with Structured FORTRAN 77. Calif: The Benjamin/Cummings Pub. Co., 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रD.M, Etter. Problem Solving with Structured FORTRAN 77. The Benjamin/Cummings Pub. Co., 1984.
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