Dyfyniad APA

Purcell, E. J., & Varberg, D. (1984). Calculus with analytic geometry (Fourth edition.). Prentice Hall.

Dyfyniad Arddull Chicago

Purcell, Edwin J., and Dale Varberg. Calculus with Analytic Geometry. Fourth edition. Englewood Cliffs, New Jersey: Prentice Hall, 1984.

Dyfyniad MLA

Purcell, Edwin J., and Dale Varberg. Calculus with Analytic Geometry. Fourth edition. Prentice Hall, 1984.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.