(1810). [Letters on internal improvements in the states of Pennsylvania, New York, etc.]. s.n.
Chicago Style (17th ed.) Citation[Letters on Internal Improvements in the States of Pennsylvania, New York, Etc.]. [United States]: s.n, 1810.
MLA (9th ed.) Citation[Letters on Internal Improvements in the States of Pennsylvania, New York, Etc.]. s.n, 1810.
Warning: These citations may not always be 100% accurate.