APA (7th ed.) Citation

Viollet-le-Duc, E. Discourses on architecture. Allen & Unwin.

Chicago Style (17th ed.) Citation

Viollet-le-Duc, Eugène-Emmanuel. Discourses on Architecture. London: Allen & Unwin.

MLA (9th ed.) Citation

Viollet-le-Duc, Eugène-Emmanuel. Discourses on Architecture. Allen & Unwin.

Warning: These citations may not always be 100% accurate.