APA (7th ed.) Citation

Laing, D. (1991). The earth systems: An introduction to earth science. WmC Brown.

Chicago Style (17th ed.) Citation

Laing, David. The Earth Systems: An Introduction to Earth Science. Dubuque, IA: WmC Brown, 1991.

MLA (9th ed.) Citation

Laing, David. The Earth Systems: An Introduction to Earth Science. WmC Brown, 1991.

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