Vogel, J. C. Multiple origins of polyploids in European Asplenium (Pteridophyta).
Chicago Style aipamenaVogel, Johannes Christian. Multiple Origins of Polyploids in European Asplenium (Pteridophyta). University of Cambridge, 1995.
MLA aipamenaVogel, Johannes Christian. Multiple Origins of Polyploids in European Asplenium (Pteridophyta).
Kontuz: berrikusi erreferentzia hauek erabili aurretik.