Lua APA (7ú heag.)

NAPS THOMAS L. (1982). COBOL: A COMPREHENSIVE TREATMENT. RESTON PUBLISHERS.

Lua i Stíl Chicago (17ú heag.)

NAPS THOMAS L. COBOL: A COMPREHENSIVE TREATMENT. VIRGINIA: RESTON PUBLISHERS, 1982.

Lua MLA (9ú heag.)

NAPS THOMAS L. COBOL: A COMPREHENSIVE TREATMENT. RESTON PUBLISHERS, 1982.

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