APA (7th ed.) Citation

BUDLONG MO. (1998). TEACH YOURSELF COBOL IN 21 DAYS (2ND.). TECHMEDIA.

Chicago Style (17th ed.) Citation

BUDLONG MO. TEACH YOURSELF COBOL IN 21 DAYS. 2ND. NEW DELHI: TECHMEDIA, 1998.

MLA (9th ed.) Citation

BUDLONG MO. TEACH YOURSELF COBOL IN 21 DAYS. 2ND. TECHMEDIA, 1998.