Hough, E. 1. (1925). The ship of souls. D. Appleton and company.
Chicago-viite (17. p.)Hough, Emerson 185701923. The Ship of Souls. New York, London: D. Appleton and company, 1925.
MLA-viite (9. p.)Hough, Emerson 185701923. The Ship of Souls. D. Appleton and company, 1925.
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