Joseph Rife, Joshua Woods and William L. Potter, (eds.), "Ancient Coins of the Graeco-Roman World: the Nickle Numismatic Papers." in Ancient Coins of the Graeco-Roman World: the Nickle Numismatic Papers. entry published June 28, 2023, https://caesarea-maritima.org/bibl/56QGSC2RWaldemarHeckelRichardSullivanAncient Coins of the Graeco-Roman World: the Nickle Numismatic Papers.https://caesarea-maritima.org/bibl/56QGSC2Rhttps://www.zotero.org/groups/caesarea-maritima/items/56QGSC2Rhttps://www.zotero.org/groups/2320447/items/56QGSC2RWaterlooWilfrid Laurier University Press2000
  Heckel, Waldemar, and Richard Sullivan, eds. Ancient Coins of the Graeco-Roman World: The Nickle Numismatic Papers. Waterloo: Wilfrid Laurier University Press, 2000. https://public.ebookcentral.proquest.com/choice/publicfullrecord.aspx?p=3050232.
Waldemar Heckel and Richard Sullivan, eds., Ancient Coins of the Graeco-Roman World: The Nickle Numismatic Papers. (Waterloo: Wilfrid Laurier University Press, 2000), https://public.ebookcentral.proquest.com/choice/publicfullrecord.aspx?p=3050232.