APA (7th ed.) Citation

HECKENBACH, A. J. Elementary functions An Approach to Precalculus Mathematics. The Macmillan Co.

Chicago Style (17th ed.) Citation

HECKENBACH, ALAN J. Elementary Functions An Approach to Precalculus Mathematics. The Macmillan Co.

MLA (8th ed.) Citation

HECKENBACH, ALAN J. Elementary Functions An Approach to Precalculus Mathematics. The Macmillan Co.

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