Thomson, F. P. (1964). Giro Credit Transfer Systems. ELSEVIER.
Lua i Stíl Chicago (17ú heag.)Thomson, F. P. Giro Credit Transfer Systems. ELSEVIER, 1964.
Lua MLA (8ú heag.)Thomson, F. P. Giro Credit Transfer Systems. ELSEVIER, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.