University of Queensland. Speleological Society & Sprent, J. K. (1970). Mount Etna caves: A collection of papers covering several aspects of the Mt Etna and Limestone Ridge caves area of central Queensland. University of Queensland Speleological Society.
芝加哥风格引文University of Queensland. Speleological Society 与 J. K. Sprent. Mount Etna Caves: A Collection of Papers Covering Several Aspects of the Mt Etna and Limestone Ridge Caves Area of Central Queensland. St. Lucia, Qld.: University of Queensland Speleological Society, 1970.
MLA引文University of Queensland. Speleological Society 与 J. K. Sprent. Mount Etna Caves: A Collection of Papers Covering Several Aspects of the Mt Etna and Limestone Ridge Caves Area of Central Queensland. University of Queensland Speleological Society, 1970.