APA (7th ed.) Citation

Wall, C., & Wall, J. (1972). Resources and References in Earth Sciences.

Chicago Style (17th ed.) Citation

Wall, Charles, and Janet Wall. Resources and References in Earth Sciences. 1972.

MLA (9th ed.) Citation

Wall, Charles, and Janet Wall. Resources and References in Earth Sciences. 1972.

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