Lua APA (7ú heag.)

Ludlum, R. (1979). The Holcroft covenant (Bantam ed.). Bantam Books.

Lua i Stíl Chicago (17ú heag.)

Ludlum, Robert. The Holcroft Covenant. Bantam ed. New York: Bantam Books, 1979.

Lua MLA (9ú heag.)

Ludlum, Robert. The Holcroft Covenant. Bantam ed. Bantam Books, 1979.

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