Crepps, R. B., & Mills, R. E. (1923). Ball test applied to cement mortar and concrete. Bulletin / Engineering Experiment Station <West Lafayette, Ind.> 12.
シカゴスタイル引用形Crepps, R. B., , R. E. Mills. "Ball Test Applied to Cement Mortar and Concrete." Bulletin / Engineering Experiment Station <West Lafayette, Ind.> 12 1923.
MLA引用形式Crepps, R. B., , R. E. Mills. "Ball Test Applied to Cement Mortar and Concrete." Bulletin / Engineering Experiment Station <West Lafayette, Ind.> 12 1923.
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