Cite

Missionary father on a hilltop with sketch of a cross in the sky, Madagascar, ca. 1900-1930

MLA

Missionary Father on a Hilltop with Sketch of a Cross in the Sky, Madagascar, Ca. 1900-1930. 1900. https://collections.library.yale.edu/catalog/11432910.

APA, 6th edition

Missionary father on a hilltop with sketch of a cross in the sky, Madagascar, ca. 1900-1930. (1900). [Group portraits (AAT), photographic postcards (AAT), photographs (AAT)]. https://collections.library.yale.edu/catalog/11432910.