APA Citation

Milligan, G. (1977). The changing earth: An introduction to geology. McGraw Hill.

Chicago Style Citation

Milligan, G.C. The Changing Earth: An Introduction to Geology. McGraw Hill, 1977.

MLA Citation

Milligan, G.C. The Changing Earth: An Introduction to Geology. McGraw Hill, 1977.

Warning: These citations may not always be 100% accurate.