Joyce, G. H. (1923). Principles of Natural Theology. Longmans, Green & Co.
Cita Chicago Style (17a ed.)Joyce, George Hayward. Principles of Natural Theology. London: Longmans, Green & Co, 1923.
Cita MLA (9a ed.)Joyce, George Hayward. Principles of Natural Theology. Longmans, Green & Co, 1923.
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