Não informado. (1883). Contributions from the Biological Laboratories in Princeton University. Princeton University, Biological Laboratories.
Lua i Stíl Chicago (17ú heag.)Não informado. Contributions from the Biological Laboratories in Princeton University. Princeton, NJ: Princeton University, Biological Laboratories, 1883.
Lua MLA (8ú heag.)Não informado. Contributions from the Biological Laboratories in Princeton University. Princeton University, Biological Laboratories, 1883.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.