Johansson, U. S. (2002). Clades in the "higher land bird assemblage". Stockholms universitet.
Lua i Stíl Chicago (17ú heag.)Johansson, Ulf S. Clades in the "Higher Land Bird Assemblage". Sweden: Stockholms universitet, 2002.
Lua MLA (8ú heag.)Johansson, Ulf S. Clades in the "Higher Land Bird Assemblage". Stockholms universitet, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.