Gorayeb, J. P., & LeBuffe, F. P. (1928). The life and letters of Walter Drum, S. J. The America Press.
Lua i Stíl Chicago (17ú heag.)Gorayeb, Joseph P., agus Francis P. LeBuffe. The Life and Letters of Walter Drum, S. J. New York: The America Press, 1928.
Lua MLA (8ú heag.)Gorayeb, Joseph P., agus Francis P. LeBuffe. The Life and Letters of Walter Drum, S. J. The America Press, 1928.
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