Middleton, J., & Waltham, T. (1986). The underground atlas: A gazetteer of the world's cave regions. R. Hale.
芝加哥风格引文Middleton, John, 与 Tony Waltham. The Underground Atlas: A Gazetteer of the World's Cave Regions. London: R. Hale, 1986.
MLA引文Middleton, John, 与 Tony Waltham. The Underground Atlas: A Gazetteer of the World's Cave Regions. R. Hale, 1986.
警告：这些引文格式不一定是100％准确.