The seven lamps of architecture
MLA
Ruskin, John, 1819-1900. The seven lamps of architecture. 1855.. https://collections.library.yale.edu/catalog/32196106.
APA, 6th edition
Ruskin, John, 1819-1900. (1855.)[The seven lamps of architecture]. https://collections.library.yale.edu/catalog/32196106.