APA (7 वां संस्करण) प्रशस्ति पत्र

Etter, D. M. (1984). Problem solving with structured FORTRAN 77. The Benjamin/Cummings Pub Co.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Etter, D. M. Problem Solving with Structured FORTRAN 77. Menlo Park, Calif: The Benjamin/Cummings Pub Co, 1984.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Etter, D. M. Problem Solving with Structured FORTRAN 77. The Benjamin/Cummings Pub Co, 1984.