ebrary, Inc, & Upham, P. (2003). Towards sustainable aviation. Earthscan Publications.
芝加哥风格引文ebrary, Inc, 与 Paul Upham. Towards Sustainable Aviation. London ; Sterling, VA: Earthscan Publications, 2003.
MLA引文ebrary, Inc, 与 Paul Upham. Towards Sustainable Aviation. Earthscan Publications, 2003.
警告：这些引文格式不一定是100％准确.