Crase, D., & Zanoni, T. Ruperti Imagines: A portrait of Rupert Barneby. Brittonia : A journal of systematic botany.
Lua i Stíl Chicago (17ú heag.)Crase, Douglas, agus Thomas Zanoni. "Ruperti Imagines: A Portrait of Rupert Barneby." Brittonia : A Journal of Systematic Botany .
Lua MLA (8ú heag.)Crase, Douglas, agus Thomas Zanoni. "Ruperti Imagines: A Portrait of Rupert Barneby." Brittonia : A Journal of Systematic Botany, .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.