APA Zitierstil

Spencer, E. W. (2003). Earth science: Understanding environmental systems. McGraw-Hill.

Chicago Zitierstil

Spencer, Edgar Winston. Earth Science: Understanding Environmental Systems. McGraw-Hill, 2003.

MLA Zitierstil

Spencer, Edgar Winston. Earth Science: Understanding Environmental Systems. McGraw-Hill, 2003.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.