APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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