MLA

Stenzel, Franz (1906-1998). "Deserted Farmhouse. Fitzwilliam N.H. Thurs. Aug 1877 fin 12.45 pm." Watercolor, 24.9 x 36 cm. on sheet 27.7 x 37.7 cm.. Box 4, folder 71. 1877 Aug. https://collections.library.yale.edu/catalog/10869229.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 4, folder 71"])(1877 Aug)["Deserted Farmhouse. Fitzwilliam N.H. Thurs. Aug 1877 fin 12.45 pm." Watercolor, 24.9 x 36 cm. on sheet 27.7 x 37.7 cm.]. https://collections.library.yale.edu/catalog/10869229.