Cita APA (7th ed.)

Purcell, E. J. (1984). Calculus with analytic geometry (4th ed.). National Book Store.

Cita Chicago (17th ed.)

Purcell, Edwin J. Calculus with Analytic Geometry. 4th ed. Manila: National Book Store, 1984.

Cita MLA (9th ed.)

Purcell, Edwin J. Calculus with Analytic Geometry. 4th ed. National Book Store, 1984.