MLA

Stenzel, Franz (1906-1998). Paxson, E. S. "Phillippines 1908-9." Sketchbook containing eleven sketches in pencil, 14 x 22 cm. (in Series III). Box 56, folder 1100. [1908-09]. https://collections.library.yale.edu/catalog/17441637.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 56, folder 1100"])([1908-09])[Paxson, E. S. "Phillippines 1908-9." Sketchbook containing eleven sketches in pencil, 14 x 22 cm. (in Series III)]. https://collections.library.yale.edu/catalog/17441637.