Lua APA (7ú heag.)

ROY M.K. (1991). COBOL PROGRAMMING. TATA MC GRAW HILL.

Lua i Stíl Chicago (17ú heag.)

ROY M.K. COBOL PROGRAMMING. TATA MC GRAW HILL, 1991.

Lua MLA (9ú heag.)

ROY M.K. COBOL PROGRAMMING. TATA MC GRAW HILL, 1991.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.