Lua APA (7ú heag.)

EDWARDS, P. (1987). Advanced cobol. Macmillan.

Lua i Stíl Chicago (17ú heag.)

EDWARDS, Perry. Advanced Cobol. New York: Macmillan, 1987.

Lua MLA (9ú heag.)

EDWARDS, Perry. Advanced Cobol. Macmillan, 1987.

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