ebrary, Inc, & Sackman, D. C. (2010). A companion to American environmental history. Wiley-Blackwell.
芝加哥风格引文ebrary, Inc, 与 Douglas Cazaux Sackman. A Companion to American Environmental History. Chichester, West Sussex ; Malden, MA: Wiley-Blackwell, 2010.
MLA引文ebrary, Inc, 与 Douglas Cazaux Sackman. A Companion to American Environmental History. Wiley-Blackwell, 2010.
警告：这些引文格式不一定是100％准确.