Walter, J. E. (1901). The principles of knowledge. The principles of knowledge with remarks on the nature of reality.
Цитирование в стиле Чикаго (17-е изд.)Walter, Johnston Estep. "The Principles of Knowledge." The Principles of Knowledge with Remarks on the Nature of Reality 1901.
Цитирование MLA (8-е изд.)Walter, Johnston Estep. "The Principles of Knowledge." The Principles of Knowledge with Remarks on the Nature of Reality, 1901.
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