APA (7th ed.) Citation

Keal, H. M., & Leonard, C. J. (1942). Essential mathematics for skilled workers. J. Wiley & Sons, inc.; Chapman & Hall, limited.

Chicago Style (17th ed.) Citation

Keal, Harry M., and Clarence J. Leonard. Essential Mathematics for Skilled Workers. New York : London: J. Wiley & Sons, inc.; Chapman & Hall, limited, 1942.

MLA (9th ed.) Citation

Keal, Harry M., and Clarence J. Leonard. Essential Mathematics for Skilled Workers. J. Wiley & Sons, inc.; Chapman & Hall, limited, 1942.