APA (7th ed.) Citation

Flax, R. W., Keith, R. E., & Randall, M. D. (1971). Welding the HY steels. American Society for Testing and Materials.

Chicago Style (17th ed.) Citation

Flax, R. W., R. E. Keith, and M. D. Randall. Welding the HY Steels. Philadelphia,: American Society for Testing and Materials, 1971.

MLA (8th ed.) Citation

Flax, R. W., et al. Welding the HY Steels. American Society for Testing and Materials, 1971.