Gaya APA

YOURDON, E, E. (0). Learning to Program in strucred Cobol ; parts 1 and 2 . New Delhi: Prentice Hall of Hindia.

Gaya MLA

YOURDON, Edward, Et.al. "Learning to Program in strucred Cobol ; parts 1 and 2". New Delhi: Prentice Hall of Hindia, 0. Buku.