Yourdon, E. . .., Gane, C. . .., Lister, . T. . .., & Sarson, . T. . .. (1979). Learning to programm in structured cobol: Parts 1and 2. Prentice Hall of India.
استشهاد بنمط شيكاغوYourdon, Edward ., Chris Gane, Timothy Lister, و Trish Sarson. Learning to Programm in Structured Cobol: Parts 1and 2. New Delhi: Prentice Hall of India, 1979.
MLA استشهادYourdon, Edward ., et al. Learning to Programm in Structured Cobol: Parts 1and 2. Prentice Hall of India, 1979.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.