APA引文

Research Publications, inc. (1983). City directories of the United States, pre-1860 through 1901: Guide to the microfilm collection. Research Publications.

Chicago Style (17th ed.) Citation

Research Publications, inc. City Directories of the United States, Pre-1860 Through 1901: Guide to the Microfilm Collection. Woodbridge, CT: Research Publications, 1983.

MLA引文

Research Publications, inc. City Directories of the United States, Pre-1860 Through 1901: Guide to the Microfilm Collection. Research Publications, 1983.