Haggard, H. W. (1937). Staying young beyond your years. Funk and Wagnalls company.
Chicago Style (17. basım) AtıfHaggard, Howard Wilcox. Staying Young Beyond Your Years. New York: Funk and Wagnalls company, 1937.
MLA (9th ed.) AtıfHaggard, Howard Wilcox. Staying Young Beyond Your Years. Funk and Wagnalls company, 1937.
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