APA (7th ed.) Citation

Hardy, L. F., & Kleinfeld, E. (1967). Precalculus mathematics. Charles E. Merrill books, inc.

Chicago Style (17th ed.) Citation

Hardy, Lane. F., and Erwin Kleinfeld. Precalculus Mathematics. Ohio: Charles E. Merrill books, inc, 1967.

MLA (9th ed.) Citation

Hardy, Lane. F., and Erwin Kleinfeld. Precalculus Mathematics. Charles E. Merrill books, inc, 1967.

Warning: These citations may not always be 100% accurate.