Lua APA (7ú heag.)

LUDLUM ROBERT. (1976). GEMINI CONTENDERS. DELL PUBLISHING.

Lua i Stíl Chicago (17ú heag.)

LUDLUM ROBERT. GEMINI CONTENDERS. NEW YORK: DELL PUBLISHING, 1976.

Lua MLA (9ú heag.)

LUDLUM ROBERT. GEMINI CONTENDERS. DELL PUBLISHING, 1976.

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