APA
Edward Yordon, Chris Gane, Trish Sarson & Timothy R Lister. (1987). Learning to Program in Structured COBOL: Parts 1 & 2. New Delhi: PHI.
Chicago
Edward Yordon, Chris Gane, Trish Sarson and Timothy R Lister. 1987. Learning to Program in Structured COBOL: Parts 1 & 2. New Delhi: PHI.
Harvard
Edward Yordon, Chris Gane, Trish Sarson and Timothy R Lister. (1987). Learning to Program in Structured COBOL: Parts 1 & 2. New Delhi: PHI.
MLA
Edward Yordon, Chris Gane, Trish Sarson and Timothy R Lister. Learning to Program in Structured COBOL: Parts 1 & 2. New Delhi: PHI. 1987.