-. (1980). Compton's encyclopedia and fact-index vol.18. F.E. Compton Co.
Lua i Stíl Chicago (17ú heag.)-. Compton's Encyclopedia and Fact-index Vol.18. Chicago: F.E. Compton Co, 1980.
Lua MLA (9ú heag.)-. Compton's Encyclopedia and Fact-index Vol.18. F.E. Compton Co, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.