Longleat House (Warminster, England), Somerset, E. S., & Somerset, W. S. (1971). Seymour papers. Micro Methods Ltd..
Lua i Stíl Chicago (17ú heag.)Longleat House (Warminster, England), Edward Seymour Somerset, agus William Seymour Somerset. Seymour Papers. East Ardsley, Wakefield, West Yorkshire: Micro Methods Ltd., 1971.
Lua MLA (8ú heag.)Longleat House (Warminster, England), et al. Seymour Papers. Micro Methods Ltd., 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.