Young Men's Christian Associations of North America. International Committee, Clark, W., Tipper, H., Roe, J. W., & Polakov, W. N. (1921). Foremanship: The standard course of the United Y. M. C. A. Schools. Association Press.
Dyfyniad Arddull ChicagoYoung Men's Christian Associations of North America. International Committee, Wallace Clark, Harry Tipper, Joseph Wickham Roe, and Walter Nicholas Polakov. Foremanship: The Standard Course of the United Y. M. C. A. Schools. [New York: Association Press, 1921.
Dyfyniad MLAYoung Men's Christian Associations of North America. International Committee, et al. Foremanship: The Standard Course of the United Y. M. C. A. Schools. Association Press, 1921.
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