Jackson, L. J. (1998). The Sandy Ridge and Halstead Paleo-Indian sites: Unifacial tool use and Gainey phase definition in South-Central Ontario. Museum of Anthropology.
Lua i Stíl Chicago (17ú heag.)Jackson, Lawrence J. The Sandy Ridge and Halstead Paleo-Indian Sites: Unifacial Tool Use and Gainey Phase Definition in South-Central Ontario. Ann Arbor, Mich: Museum of Anthropology, 1998.
Lua MLA (9ú heag.)Jackson, Lawrence J. The Sandy Ridge and Halstead Paleo-Indian Sites: Unifacial Tool Use and Gainey Phase Definition in South-Central Ontario. Museum of Anthropology, 1998.
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