APA (7th ed.) Citation

Middleton, J., & Waltham, T. (1992). The underground atlas: A gazetteer of the world's cave regions. Promotional Reprint Company.

Chicago Style (17th ed.) Citation

Middleton, John, and Tony Waltham. The Underground Atlas: A Gazetteer of the World's Cave Regions. Leiscester, Eng: Promotional Reprint Company, 1992.

MLA (9th ed.) Citation

Middleton, John, and Tony Waltham. The Underground Atlas: A Gazetteer of the World's Cave Regions. Promotional Reprint Company, 1992.