Não informado. (1992). Systematic biology. Society of Systematic Biologists.
Lua i Stíl Chicago (17ú heag.)Não informado. Systematic Biology. Washington: Society of Systematic Biologists, 1992.
Lua MLA (8ú heag.)Não informado. Systematic Biology. Society of Systematic Biologists, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.