APA
M.K.Roy, . (1989). Cobal Programming including MS-Coball ans Cobal-85. New Delhi: Tata McGraw Hill.
Chicago
M.K.Roy, . 1989. Cobal Programming including MS-Coball ans Cobal-85. New Delhi: Tata McGraw Hill.
Harvard
M.K.Roy, . (1989). Cobal Programming including MS-Coball ans Cobal-85. New Delhi: Tata McGraw Hill.
MLA
M.K.Roy, . Cobal Programming including MS-Coball ans Cobal-85. New Delhi: Tata McGraw Hill. 1989.