APA-viite

Worth, T. (1981). COBOL for beginners. Prentice-Hall of India.

Chicago-tyylinen lähdeviittaus

Worth, Thomas. COBOL for Beginners. New Delhi: Prentice-Hall of India, 1981.

MLA-viite

Worth, Thomas. COBOL for Beginners. Prentice-Hall of India, 1981.