Ehrlich, C. D., & Tison, S. A. (1992). NIST measurement services: NIST leak calibration service. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ehrlich, Charles D., و Stuart A. Tison. NIST Measurement Services: NIST Leak Calibration Service. Gaithersburg, MD : Washington, DC: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1992.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ehrlich, Charles D., و Stuart A. Tison. NIST Measurement Services: NIST Leak Calibration Service. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1992.