(77-12) William Henry Jackson, 1873. Morianes on Clear Creek, Valley of the Arkansas, Colorado (top); Mark Klett and JoAnn Verburg for the Rephotographic Survey Project, 1977. Clear Creek Reservoir, Colorado (bottom)
MLA
Jackson, William Henry, 1843-1942, Klett, Mark, 1952, Verburg, JoAn. (77-12) William Henry Jackson, 1873. Morianes on Clear Creek, Valley of the Arkansas, Colorado (top); Mark Klett and JoAnn Verburg for the Rephotographic Survey Project, 1977. Clear Creek Reservoir, Colorado (bottom). 1873. https://collections.library.yale.edu/catalog/2001466.
APA, 6th edition
Jackson, William Henry, 1843-1942, & Klett, Mark, 1952, & Verburg, JoAn. (1873)[(77-12) William Henry Jackson, 1873. Morianes on Clear Creek, Valley of the Arkansas, Colorado (top); Mark Klett and JoAnn Verburg for the Rephotographic Survey Project, 1977. Clear Creek Reservoir, Colorado (bottom)]. https://collections.library.yale.edu/catalog/2001466.