Cite

A plan of the town and fortifications of Gibraltar : with the Spanish lines &c.

MLA

A Plan of the Town and Fortifications of Gibraltar : with the Spanish Lines &c. Printed for Robt. Sayer & Jno. Bennett ..., 27AD. https://collections.library.yale.edu/catalog/15487367.

APA, 6th edition

A plan of the town and fortifications of Gibraltar : with the Spanish lines &c. (27 C.E.). [Maps]. Printed for Robt. Sayer & Jno. Bennett ..., https://collections.library.yale.edu/catalog/15487367.