Cita APA (7th ed.)

Hart, W. L. R. (1971). Preparation for calculus. Intext Educational Publishers.

Cita Chicago (17th ed.)

Hart, William Le Roy. Preparation for Calculus. Scranton: Intext Educational Publishers, 1971.

Cita MLA (9th ed.)

Hart, William Le Roy. Preparation for Calculus. Intext Educational Publishers, 1971.