MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 75. Verso: Monument to Ferdinand VII of Spain, sculpted by Antonio Solá in 1834, and the Palacio de los Capitanes Generales in the Plaza de Armas, Havana, Cuba. Box 1, folder 73. circa 1860. https://collections.library.yale.edu/catalog/16657616.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 73"])(circa 1860)[Album Page 75. Verso: Monument to Ferdinand VII of Spain, sculpted by Antonio Solá in 1834, and the Palacio de los Capitanes Generales in the Plaza de Armas, Havana, Cuba]. https://collections.library.yale.edu/catalog/16657616.