Παραπομπή APA

Yourdon, E. (1979). Learning to program in structured COBOL: : parts 1 and 2. Englewood Cliffs, N.J.: Prentice-Hall.

Παραπομπή Chicago Style

Yourdon, Edward. Learning to Program in Structured COBOL: : Parts 1 and 2. Englewood Cliffs, N.J.: Prentice-Hall, 1979.

Παραπομπή MLA

Yourdon, Edward. Learning to Program in Structured COBOL: : Parts 1 and 2. Englewood Cliffs, N.J.: Prentice-Hall, 1979.

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