Hustrulid, W. A., & Bullock, R. L. (2001). Underground mining methods: Engineering fundamentals and international case studies. Society for Mining, Metallurgy, and Exploration, Inc.
Chicago-viite (17. p.)Hustrulid, William A., ja Richard L. Bullock. Underground Mining Methods: Engineering Fundamentals and International Case Studies. Littleton: Society for Mining, Metallurgy, and Exploration, Inc, 2001.
MLA-viite (9. p.)Hustrulid, William A., ja Richard L. Bullock. Underground Mining Methods: Engineering Fundamentals and International Case Studies. Society for Mining, Metallurgy, and Exploration, Inc, 2001.
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