APA (7e ed.) Bronvermelding

(1999). Appearance and essence: Refinements of classical architecture - curvature : proceedings of the Second Williams Symposium on Classical Architecture held at the University of Pennsylvania, Philadelphia, April 2-4, 1993 / Lothar Haselberger, editor.

Chicago (17e ed.) Bronvermelding

Appearance and Essence: Refinements of Classical Architecture - Curvature : Proceedings of the Second Williams Symposium on Classical Architecture Held at the University of Pennsylvania, Philadelphia, April 2-4, 1993 / Lothar Haselberger, Editor. 1999.

MLA (9e ed.) Bronvermelding

Appearance and Essence: Refinements of Classical Architecture - Curvature : Proceedings of the Second Williams Symposium on Classical Architecture Held at the University of Pennsylvania, Philadelphia, April 2-4, 1993 / Lothar Haselberger, Editor. 1999.