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Lua i Stíl Chicago (17ú heag.)May, Lola J., Shirley M. Frye, agus Donna C. Jacobs. HBJ Mathematics. New York: Harcourt Brace College Pub.
Lua MLA (9ú heag.)May, Lola J., et al. HBJ Mathematics. Harcourt Brace College Pub.
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