De Winton, Dorothea; Anderson, Edgar (1935-10-01). "The Genetics of Primula sinensisIV. Indications as to the Ontogenetic Relationship of Leaf and Inflorescence". Annals of Botany. os-49 (4): 671–672. doi:10.1093/oxfordjournals.aob.a090530. ISSN0305-7364.
De Winton, Dorothea; Anderson, Edgar (1935-10-01). "The Genetics of Primula sinensisIV. Indications as to the Ontogenetic Relationship of Leaf and Inflorescence". Annals of Botany. os-49 (4): 671–672. doi:10.1093/oxfordjournals.aob.a090530. ISSN0305-7364.