Dyfyniad APA

Purcell, E. J., & Varberg, D. E. (1984). Calculus with analytic geometry. NBS.

Dyfyniad Arddull Chicago

Purcell, Edwin J., and Dale E. Varberg. Calculus with Analytic Geometry. Manila: NBS, 1984.

Dyfyniad MLA

Purcell, Edwin J., and Dale E. Varberg. Calculus with Analytic Geometry. NBS, 1984.

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