Lauri, Pierre-éricPierre-éric; Karen Maguylo, and Catherine Trottier (2006). "Architecture and size relations: an essay on the apple (Malus x domestica, Rosaceae) tree". American Journal of Botany. 93 (3). Botanical Society of America: 357–368. doi:10.3732/ajb.93.3.357. PMID21646196.
Lauri, Pierre-éricPierre-éric; Karen Maguylo, and Catherine Trottier (2006). "Architecture and size relations: an essay on the apple (Malus x domestica, Rosaceae) tree". American Journal of Botany. 93 (3). Botanical Society of America: 357–368. doi:10.3732/ajb.93.3.357. PMID21646196.
Sue Tarjan (Fall 2006). "Autumn Apple Musings"(PDF). News & Notes of the UCSC Farm & Garden, Center for Agroecology & Sustainable Food Systems. pp. 1–2. Archived from the original(PDF) on 11 August 2007. Retrieved 24 January 2008.
uga.edu
"Apple". 2008-01-21. Archived from the original on 2008-01-21. Retrieved 2021-06-16.
Sue Tarjan (Fall 2006). "Autumn Apple Musings"(PDF). News & Notes of the UCSC Farm & Garden, Center for Agroecology & Sustainable Food Systems. pp. 1–2. Archived from the original(PDF) on 11 August 2007. Retrieved 24 January 2008.