APA

Gibson C. R. 1., Ryan J., .The theory and practice of surveying; containing all the instructions requisite for the skilful practice of this art / Robert Gibson. Illustrated by copper-plates. Newly arranged, improved, and enlarged, with useful selections, and a new set of accurate mathematical tables. By James Ryan, teacher of the mathematics. New York : published by Evert Duyckinck, N° 68 water-street. G. Long, printer, 1821: .

Chicago

Gibson Charles Robert 1870-1931, Ryan James, .The theory and practice of surveying; containing all the instructions requisite for the skilful practice of this art / Robert Gibson. Illustrated by copper-plates. Newly arranged, improved, and enlarged, with useful selections, and a new set of accurate mathematical tables. By James Ryan, teacher of the mathematics. New York : published by Evert Duyckinck, N° 68 water-street. G. Long, printer, 1821: .

Harvard

Gibson C. R. 1., Ryan J., .The theory and practice of surveying; containing all the instructions requisite for the skilful practice of this art / Robert Gibson. Illustrated by copper-plates. Newly arranged, improved, and enlarged, with useful selections, and a new set of accurate mathematical tables. By James Ryan, teacher of the mathematics. New York : published by Evert Duyckinck, N° 68 water-street. G. Long, printer, 1821: .

MLA

Gibson Charles Robert 1870-1931, Ryan James, .New York : published by Evert Duyckinck, N° 68 water-street. G. Long, printer, 1821: . .