APA (7th ed.) Citation

Yourdon, E., Gane, C., Sarson, T., & Lister, T. R. (1978). Learning to program in structured COBOL. Yourdon.

Chicago Style (17th ed.) Citation

Yourdon, Edward, Chris Gane, Trish Sarson, and Timothy R. Lister. Learning to Program in Structured COBOL. Nueva York: Yourdon, 1978.

MLA (9th ed.) Citation

Yourdon, Edward, et al. Learning to Program in Structured COBOL. Yourdon, 1978.