International Society of Arboriculture. (2003). Introduction to arboriculture: Tree biology. Champaign: International Society of Arboriculture.
استشهاد بنمط شيكاغوInternational Society of Arboriculture. Introduction to Arboriculture: Tree Biology. Champaign: International Society of Arboriculture, 2003.
MLA استشهادInternational Society of Arboriculture. Introduction to Arboriculture: Tree Biology. Champaign: International Society of Arboriculture, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.