Cite

Drawings: Sketches/Studies/Presentation/Concept

MLA

Siegel, Gwathmey, and Associates Architects. Drawings: Sketches/Studies/Presentation/Concept. 1965. https://collections.library.yale.edu/catalog/10021650.

APA, 6th edition

Siegel, G., & Architects, A. (1965). Drawings: Sketches/Studies/Presentation/Concept. https://collections.library.yale.edu/catalog/10021650.