FERRAR, W. (1962). Differential calculus. B.L.B.S. & 0.U.P.
Tohutoru Kātū Chicago (17th ed.)FERRAR, W.L. Differential Calculus. London: B.L.B.S. & 0.U.P, 1962.
Tohutoro MLA (9th ed.)FERRAR, W.L. Differential Calculus. B.L.B.S. & 0.U.P, 1962.
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