Defeat of Barbarossa. Game Book Marketing Co. ISBN 0941052826. Nafziger, George F. German Order of Battle: Infantry in World War II. Greenhill Books. 31
ns,2000年)、《物理之外的世界》(A World Beyond Physics: The Emergence and Evolution of Life,2019年)、《秩序的起源:进化中的自组织和自然选择》(The Origins of Order: Self Organization and
来自条顿骑士团 来自奥匈帝国陆军 Mitcham(2007年) Nafziger, George F. German Order of Battle: Infantry in World War II. Greenhill Books. 31 Mar 2000. ISBN 978-1-85367-393-1
把一些亞種視為獨立的品種。以下為比較主流的分類: Grubb, P. Order Artiodactyla. Wilson, D.E. & Reeder, D.M. (编). Mammal Species of the World: A Taxonomic and Geographic Reference