APA (7th ed.) Citation

Hallam. (1977). Planet Earth: An encyclopedia of Geology. Elsevier Phaidon.

Chicago Style (17th ed.) Citation

Hallam. Planet Earth: An Encyclopedia of Geology. Oxford: Elsevier Phaidon, 1977.

MLA (8th ed.) Citation

Hallam. Planet Earth: An Encyclopedia of Geology. Elsevier Phaidon, 1977.

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