APA (7. basım) Alıntı

Murrill, P. W., & Smith, C. L. (1971). An introduction to COBOL programming. Intext Educational Publishers.

Chicago Style (17. basım) Atıf

Murrill, Paul W., ve Cecil L. Smith. An Introduction to COBOL Programming. Scranton: Intext Educational Publishers, 1971.

MLA (8th ed.) Atıf

Murrill, Paul W., ve Cecil L. Smith. An Introduction to COBOL Programming. Intext Educational Publishers, 1971.