Childs, W. H. J. (1946). Physical constants,: Selected for students (4th ed., rev.). Methuen.
芝加哥风格引文Childs, W. H. J. Physical Constants,: Selected for Students. 4th ed., rev. London,: Methuen, 1946.
MLA引文Childs, W. H. J. Physical Constants,: Selected for Students. 4th ed., rev. Methuen, 1946.
警告：这些引文格式不一定是100％准确.