Gale Group & Friedman, L. S. (2012). Endangered species. Greenhaven Press.
Lua i Stíl Chicago (17ú heag.)Gale Group agus Lauri S. Friedman. Endangered Species. Detroit, Mich: Greenhaven Press, 2012.
Lua MLA (8ú heag.)Gale Group agus Lauri S. Friedman. Endangered Species. Greenhaven Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.