Title of map. Descriptive label. City of publication: Publisher, date. Title of Online Collection. Date of posting. Database. Sponsoring institution. Day Month Year of access <electronic address>.
Map of the West Coast of Africa from Sierra Leone to Cape Palmas, including the Colony of Liberia. Map. Philadelphia: Finley, 1830. Map Collections 1500-2004. 3 May 2005. American Memory. Lib. of Congress. 1 Aug. 2005 <http://hdl.loc.gov/loc.gmd/g8882c.lm000002>.
Last name, First name Middle initial. Title of Work. Format. City: Publishing Company, copyright date. Source, Collection. Medium, http://..., (accessed date).
Ashmun, Jehudi. Map of the West Coast of Africa from Sierra Leone to Cape Palmas, including the Colony of Liberia. Map. Philadelphia: A. Finley, 1830. From Library of Congress, Map Collections. http://hdl.loc.gov/loc.gmd/g8882c.lm000002 (accessed January 9, 2006).