Tohutoro APA (7th ed.)
Sawyer, W. W. (1955). Prelude to Mathematics (1a. ed.). Pelican books.
Tohutoru Kātū Chicago (17th ed.)
Sawyer, W. W. Prelude to Mathematics. 1a. ed. Londres: Pelican books, 1955.
Tohutoro MLA (9th ed.)
Sawyer, W. W. Prelude to Mathematics. 1a. ed. Pelican books, 1955.
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