Yourdon, E., Gane, C., Sarson, T., & Lister, T. R. (1978). Learning to program in structured COBOL. Yourdon.
Citazione stile Chigago Style (17a edizione)Yourdon, Edward, Chris Gane, Trish Sarson, e Timothy R. Lister. Learning to Program in Structured COBOL. Nueva York: Yourdon, 1978.
Citatione MLA (9a ed.)Yourdon, Edward, et al. Learning to Program in Structured COBOL. Yourdon, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.