APA
Spence J. W., . (1982). Cobol for the 80's. New York: West publishing Co.
Chicago
Spence J Wayne, . 1982. Cobol for the 80's. New York: West publishing Co.
Harvard
Spence J. W., . (1982). Cobol for the 80's. New York: West publishing Co.
MLA
Spence J Wayne, . Cobol for the 80's. New York: West publishing Co. 1982.
