MLA

Stenzel, Franz (1906-1998). "Tomahnawos board at the base of monument over 'Swell' a Makah chief buried at Baadah Pt. Neah Bay W.T." Painting, 18 x 23.4 cm.. Box 6, folder 107. [1861 Apr ?]. https://collections.library.yale.edu/catalog/2003175.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 6, folder 107"])([1861 Apr ?])["Tomahnawos board at the base of monument over 'Swell' a Makah chief buried at Baadah Pt. Neah Bay W.T." Painting, 18 x 23.4 cm.]. https://collections.library.yale.edu/catalog/2003175.