Cita APA (7a ed.)
Welburn, T. (1983). Advanced Structured COBOL: Batch, On-line, and Data-base Concepts (1. ed.). Mayfield Publ. Co.
Cita Chicago Style (17a ed.)
Welburn, Tyler. Advanced Structured COBOL: Batch, On-line, and Data-base Concepts. 1. ed. Palo Alto: Mayfield Publ. Co, 1983.
Cita MLA (9a ed.)
Welburn, Tyler. Advanced Structured COBOL: Batch, On-line, and Data-base Concepts. 1. ed. Mayfield Publ. Co, 1983.
Precaución: Estas citas no son 100% exactas.