"Peterson and King, the lead dog, opp. p. 128."
MLA
"Peterson and King, the Lead Dog, Opp. p. 128.". 0AD. https://collections.library.yale.edu/catalog/2007398.
APA, 6th edition
"Peterson and King, the lead dog, opp. p. 128.". (0 C.E.). [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2007398.