Heifner, L. E. (1978). The Heifners: By Lewis E. Heifner. Sentinel Publ..
Lua i Stíl Chicago (17ú heag.)Heifner, Lewis E. The Heifners: By Lewis E. Heifner. LeMars, Iowa: Sentinel Publ., 1978.
Lua MLA (8ú heag.)Heifner, Lewis E. The Heifners: By Lewis E. Heifner. Sentinel Publ., 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.