Yarian, R. (1989). Health 89/90 (10ª ed.). The Dushkin.
Lua i Stíl Chicago (17ú heag.)Yarian, Richard. Health 89/90. 10ª ed. The Dushkin, 1989.
Lua MLA (9ú heag.)Yarian, Richard. Health 89/90. 10ª ed. The Dushkin, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.