Inge, W. R. (1918). The philosophy of Plotinus: The Gifford lectures at St. Andrews, 1917-1918. Longmans, Green & Co..
Čikaški stil citiranja (17. izdanje)Inge, William Ralph. The Philosophy of Plotinus: The Gifford Lectures at St. Andrews, 1917-1918. London: Longmans, Green & Co., 1918.
MLA način citiranja (8. izdanje)Inge, William Ralph. The Philosophy of Plotinus: The Gifford Lectures at St. Andrews, 1917-1918. Longmans, Green & Co., 1918.
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