Cita APA (7th ed.)

Hardy, F. L. (1967). Precalculus mathematics. C.E. Merrill Books.

Cita Chicago (17th ed.)

Hardy, F. Lane. Precalculus Mathematics. Columbus, Ohio: C.E. Merrill Books, 1967.

Cita MLA (9th ed.)

Hardy, F. Lane. Precalculus Mathematics. C.E. Merrill Books, 1967.