MAC DOUGALL A F. (1991). HANDBOOK OF LIBRARY COOPERATION. GOWER.
Lua i Stíl Chicago (17ú heag.)MAC DOUGALL A F. HANDBOOK OF LIBRARY COOPERATION. ENGLAND: GOWER, 1991.
Lua MLA (9ú heag.)MAC DOUGALL A F. HANDBOOK OF LIBRARY COOPERATION. GOWER, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.