Gray, D. E. Man and his Physical World. / Dwight E. Gray (2.). Toronto : D. Van Nostrand Company.
Chicago Style CitationGray, Dwight E. Man and His Physical World. / Dwight E. Gray. 2. Toronto : D. Van Nostrand Company.
MLA CitationGray, Dwight E. Man and His Physical World. / Dwight E. Gray. 2. Toronto : D. Van Nostrand Company.
Warning: These citations may not always be 100% accurate.