Phillippakis, A. (1986). Structural cobol (3rd.). Mc Graw Hill.
Chicago-čujuhus (17. p.)Phillippakis, A. Structural Cobol. 3rd. New York: Mc Graw Hill, 1986.
MLA-čujuhus (9. p.)Phillippakis, A. Structural Cobol. 3rd. Mc Graw Hill, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.