APA (7th ed.) Citation

Krar, S. F., Oswald, J. W., & St. Amand, J. E. Machine tool operations.

Chicago Style (17th ed.) Citation

Krar, Stephen F., James William Oswald, and J. E. St. Amand. Machine Tool Operations.

MLA (8th ed.) Citation

Krar, Stephen F., et al. Machine Tool Operations.