MLA

Map of the Isle of France or Mauritius ... By Charles Grant Viscount De Vaux. Engraved by S.J. Neele. Black, Parry & Co., 1801. https://collections.library.yale.edu/catalog/15239201.

APA, 6th edition

Map of the Isle of France or Mauritius ... By Charles Grant Viscount de Vaux. Engraved by S.J. Neele. (1801). [Maps]. Black, Parry & Co., https://collections.library.yale.edu/catalog/15239201.