Map of part of northern Africa, showing the routes of the expedition under Messrs. Richardson, Barth, Overweg & Vogel in the years 1850 and 1853 / constructed by Augustus Petermann.
MLA
Petermann, A. (August Heinrich), 1822-1878. Map of part of northern Africa, showing the routes of the expedition under Messrs. Richardson, Barth, Overweg & Vogel in the years 1850 and 1853 / constructed by Augustus Petermann.. BRBL_00352. 1855. https://collections.library.yale.edu/catalog/15534103.
APA, 6th edition
Petermann, A. (August Heinrich), 1822-1878. (["BRBL_00352"])(1855)[Map of part of northern Africa, showing the routes of the expedition under Messrs. Richardson, Barth, Overweg & Vogel in the years 1850 and 1853 / constructed by Augustus Petermann.]. https://collections.library.yale.edu/catalog/15534103.