APA (7th ed.) Citation
Clifford, J., Harris, G., & Ugiansky, G. M. (1997). Specifications and tolerances for reference standards and field standard weights and measures: 4. Specifications and tolerances for liquefied petroleum gas and anhydrous ammonia liquid volumetric provers. NIST.
Chicago Style (17th ed.) Citation
Clifford, J.F, G.L Harris, and G. M. Ugiansky. Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures: 4. Specifications and Tolerances for Liquefied Petroleum Gas and Anhydrous Ammonia Liquid Volumetric Provers. [s.l.]: NIST, 1997.
MLA (9th ed.) Citation
Clifford, J.F, et al. Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures: 4. Specifications and Tolerances for Liquefied Petroleum Gas and Anhydrous Ammonia Liquid Volumetric Provers. NIST, 1997.
Warning: These citations may not always be 100% accurate.