Gaya APA

Johnson, L, F., Cooper, R, H. (1981). File Techniques For Data Base Organization In Cobol . New Jersey: Prentice Hall International,Inc.

Gaya MLA

Johnson, Leroy, F.., Cooper, Rodney, H.. "File Techniques For Data Base Organization In Cobol". New Jersey: Prentice Hall International,Inc, 1981. Teks.