SPENCER, E. W. (2003). Earth science: Understanding environmental systems. McGraw Hill.
Chicago Style (17th ed.) CitationSPENCER, Edgar W. Earth Science: Understanding Environmental Systems. McGraw Hill, 2003.
MLA (8th ed.) CitationSPENCER, Edgar W. Earth Science: Understanding Environmental Systems. McGraw Hill, 2003.
Warning: These citations may not always be 100% accurate.