Gilbert, W. H., Jr. (1947). Synoptic survey of data on the survival of Indian and part-Indian blood in the eastern United States. Library of Congress, Legislative Reference Service.
Chicago-viite (17. p.)Gilbert, William H., Jr. Synoptic Survey of Data on the Survival of Indian and Part-Indian Blood in the Eastern United States. [Washington, D.C.]: Library of Congress, Legislative Reference Service, 1947.
MLA-viite (8. p.)Gilbert, William H., Jr. Synoptic Survey of Data on the Survival of Indian and Part-Indian Blood in the Eastern United States. Library of Congress, Legislative Reference Service, 1947.
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