Hudson, Andrew; Critchley, Joanna; Erasmus, Yvette (2008-10-01). «The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development» (στα αγγλικά). Cold Spring Harbor Protocols2008 (10): pdb.emo100. doi:10.1101/pdb.emo100. ISSN1940-3402. PMID21356683.
Hudson, Andrew; Critchley, Joanna; Erasmus, Yvette (2008-10-01). «The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development» (στα αγγλικά). Cold Spring Harbor Protocols2008 (10): pdb.emo100. doi:10.1101/pdb.emo100. ISSN1940-3402. PMID21356683.
Oyama, R. K.; Baum, D. A. (2004). «Phylogenetic relationships of North American Antirrhinum (Veronicaceae)». American Journal of Botany91 (6): 918–25. doi:10.3732/ajb.91.6.918. PMID21653448.
Hudson, Andrew; Critchley, Joanna; Erasmus, Yvette (2008-10-01). «The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development» (στα αγγλικά). Cold Spring Harbor Protocols2008 (10): pdb.emo100. doi:10.1101/pdb.emo100. ISSN1940-3402. PMID21356683.
Hudson, Andrew; Critchley, Joanna; Erasmus, Yvette (2008-10-01). «The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development» (στα αγγλικά). Cold Spring Harbor Protocols2008 (10): pdb.emo100. doi:10.1101/pdb.emo100. ISSN1940-3402. PMID21356683.
Oyama, R. K.; Baum, D. A. (2004). «Phylogenetic relationships of North American Antirrhinum (Veronicaceae)». American Journal of Botany91 (6): 918–25. doi:10.3732/ajb.91.6.918. PMID21653448.
Hudson, Andrew; Critchley, Joanna; Erasmus, Yvette (2008-10-01). «The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development» (στα αγγλικά). Cold Spring Harbor Protocols2008 (10): pdb.emo100. doi:10.1101/pdb.emo100. ISSN1940-3402. PMID21356683.
Hudson, Andrew; Critchley, Joanna; Erasmus, Yvette (2008-10-01). «The Genus Antirrhinum (Snapdragon): A Flowering Plant Model for Evolution and Development» (στα αγγλικά). Cold Spring Harbor Protocols2008 (10): pdb.emo100. doi:10.1101/pdb.emo100. ISSN1940-3402. PMID21356683.