Tohutoro APA (7th ed.)
Veenstra, R. L. (1948). The secret of suffering. Wm. B. Eerdmans Publishing Company.
Tohutoru Kātū Chicago (17th ed.)
Veenstra, Rolf L. The Secret of Suffering. Michigan: Wm. B. Eerdmans Publishing Company, 1948.
Tohutoro MLA (9th ed.)
Veenstra, Rolf L. The Secret of Suffering. Wm. B. Eerdmans Publishing Company, 1948.
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