Gray, W. S. (1946). Guidebook for paths and pathfinders. New York: Scott, Foresman and company.
Trích dẫn kiểu ChicagoGray, William S. Guidebook for Paths and Pathfinders. New York: Scott, Foresman and company, 1946.
MLA CitationGray, William S. Guidebook for Paths and Pathfinders. New York: Scott, Foresman and company, 1946.
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