DeLorme Mapping Company. (1997). Greater Portland map & guide: Including all or part of Portland, South Portland, Westbrook, Gorham, Cape Elizabeth ... North Yarmouth. The Company.
Chicago Style (17th ed.) CitationDeLorme Mapping Company. Greater Portland Map & Guide: Including All or Part of Portland, South Portland, Westbrook, Gorham, Cape Elizabeth ... North Yarmouth. Freeport, Me.: The Company, 1997.
MLA (9th ed.) CitationDeLorme Mapping Company. Greater Portland Map & Guide: Including All or Part of Portland, South Portland, Westbrook, Gorham, Cape Elizabeth ... North Yarmouth. The Company, 1997.
Warning: These citations may not always be 100% accurate.