Gudschinsky, S. C. (1973). A manual of literacy for preliterate peoples. Summer Institute of Linguistics.
Chicago-viite (17. p.)Gudschinsky, Sarah C. A Manual of Literacy for Preliterate Peoples. Ukarumpa, Papua-New Guinea: Summer Institute of Linguistics, 1973.
MLA-viite (9. p.)Gudschinsky, Sarah C. A Manual of Literacy for Preliterate Peoples. Summer Institute of Linguistics, 1973.
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