Crase, D., & Zanoni, T. Ruperti Imagines: A portrait of Rupert Barneby. Brittonia : A journal of systematic botany.
Čikaški stil citiranja (17. izdanje)Crase, Douglas, i Thomas Zanoni. "Ruperti Imagines: A Portrait of Rupert Barneby." Brittonia : A Journal of Systematic Botany .
MLA način citiranja (8. izdanje)Crase, Douglas, i Thomas Zanoni. "Ruperti Imagines: A Portrait of Rupert Barneby." Brittonia : A Journal of Systematic Botany, .
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