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Ehsani-Moghaddam, B.(2013). Relationships among postharvest ripening attributes and storage disorders in 'Honeycrisp' apple: EDP Sciences. Retrieved November 24th, 2014 from http://apps.webofknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=9&SID=3EvPjONcROfqHpUQwHN&page=3&doc=30#
Ferree, D. C., & Warrington, I. (Eds.). (2003). Apples : Botany, Production and Uses. Cambridge, MA, USA: CABI Publishing. Retrieved from http://www.ebrary.com
Hardy Fruit Trees (2014). Welcome to hardy fruit tree nursery! Retrieved 10/08, 2014, from http://www.hardyfruittrees.ca
Health Canada (2008). Nutrients Value of Some Common Foods – Booklet: Health Canada. Retrieved November 24th, 2014 from http://www.hc-sc.gc.ca/fn-an/nutrition/fiche-nutri-data/nutrient_value-valeurs_nutritives-tc-tm-eng.php#tphp
Nepal. In World Encyclopedia. : Philip's. Retrieved 24 Nov. 2014, from http://www.oxfordreference.com/view/10.1093/acref/9780199546091.001.0001/acref-9780199546091-e-8045.
Viles, H.(2001). Coastal Protection and Management. In Encyclopedia of Global Change. : Oxford University Press. Retrieved 8 Oct. 2014, from http://www.oxfordreference.com/view/10.1093/acref/9780195108255.001.0001/acref-9780195108255-e-0074.
(2012). graft. In Allaby, M.(Ed.), A Dictionary of Plant Sciences. : Oxford University Press. Retrieved 24 Nov. 2014, from http://www.oxfordreference.com/view/10.1093/acref/9780199600571.001.0001/acref-9780199600571-e-3018.