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.