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Popoff, M. (2007). The collector’s guide to heavy metal. Volume 3: the nineties. Toront: Collector’s Guide Pub.
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Popoff, M. (2005). The collector’s guide to heavy metal. Volume 2: the eighties. Toronto: Collector’s Guide Publishing.
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Popoff, M. (2003). The collector’s guide to heavy metal. Burlington, Ont.: Collector’s Guides.
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Popoff, M. (1999). Goldmine heavy metal record price guide. Iola: Krause Publications.
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Popoff, M., & Perri, D. (2011). The collector’s guide to heavy metal. Volume 4: the 00’s. Toronto: Collector’s Guide.
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