Forbes Forbes Campbell & Co. Limited. (1972). Annual report. The Limited.
Lua i Stíl Chicago (17ú heag.)Forbes Forbes Campbell & Co. Limited. Annual Report. Bombay: The Limited, 1972.
Lua MLA (8ú heag.)Forbes Forbes Campbell & Co. Limited. Annual Report. The Limited, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.