APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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