W. S. F. Pickering, Emile Durkheim (2011). “Durkheim on Religion: A Selection of Readings with Bibliographies and Introductory Remarks”, p.113, Casemate Publishers
John Ruskin “The stones of Venice (cont'd) Seven lamps of architecture. Lectures on architecture and painting, delivered at Edinburgh in Nov. 1853. An inquiry into some of the conditions at present affecting the study of architecture in our schools”