APA-čujuhus (7. p.)
Martin, R. F. (2002). Hero of the heartland: Billy Sunday and the transformation of American society, 1862-1935. Indiana University Press.
Chicago-čujuhus (17. p.)
Martin, Robert Francis. Hero of the Heartland: Billy Sunday and the Transformation of American Society, 1862-1935. Bloomington: Indiana University Press, 2002.
MLA-čujuhus (9. p.)
Martin, Robert Francis. Hero of the Heartland: Billy Sunday and the Transformation of American Society, 1862-1935. Indiana University Press, 2002.
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