Duration of boundaries since 1500.
MLA
Gilfillan, S. Columb, 1889-. Duration of boundaries since 1500.. BRBL_00037B. 1924. https://collections.library.yale.edu/catalog/15826780.
APA, 6th edition
Gilfillan, S. Columb, 1889-. (["BRBL_00037B"])(1924)[Duration of boundaries since 1500.]. https://collections.library.yale.edu/catalog/15826780.