एपीए उद्धरण

Richards, R. M. . .. (1988). Microcomputing in cobol: Structured interactive applications. Galgotia Publications.

शिकागो स्टाइल उद्धरण

Richards, Roy Martin. Microcomputing in Cobol: Structured Interactive Applications. New Delhi: Galgotia Publications, 1988.

एमएलए उद्धरण

Richards, Roy Martin. Microcomputing in Cobol: Structured Interactive Applications. Galgotia Publications, 1988.