Cite

"The great exhibition. --The transept, looking south."

MLA

"The Great Exhibition. --The Transept, Looking South.". 1851. https://collections.library.yale.edu/catalog/2029106.

APA, 6th edition

"The great exhibition. --The transept, looking south.". (1851). [Architectural drawings, Wood engravings]. https://collections.library.yale.edu/catalog/2029106.