APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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