Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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