MLA

Templeton, Robert. Robert Templeton Drawings and Sketches Related to the Trial of Bobby Seale and Ericka Huggins, New Haven, Connecticut. 1971. https://collections.library.yale.edu/catalog/2026730.

APA, 6th edition

Templeton, R. (1971). Robert Templeton drawings and sketches related to the trial of Bobby Seale and Ericka Huggins, New Haven, Connecticut [Portraits, Pictorial works, Drawings (visual works), Sketchbooks, Sketches]. https://collections.library.yale.edu/catalog/2026730.