Não informado. (1928). Bureau of Standards Journal Research. U.S. Department of Commerce, National Bureau of Standards.
Chicago Style (17. basım) AtıfNão informado. Bureau of Standards Journal Research. Washington: U.S. Department of Commerce, National Bureau of Standards, 1928.
MLA (8th ed.) AtıfNão informado. Bureau of Standards Journal Research. U.S. Department of Commerce, National Bureau of Standards, 1928.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..