Various; Cattell, J. M. The Popular Science Monthly, August, 1900 Vol. 57, May, 1900 to October, 1900.
Chicago Style (17. basım) AtıfVarious; Cattell, James McKeen. The Popular Science Monthly, August, 1900 Vol. 57, May, 1900 to October, 1900.
MLA (9th ed.) AtıfVarious; Cattell, James McKeen. The Popular Science Monthly, August, 1900 Vol. 57, May, 1900 to October, 1900.
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