APA (7th ed.) Citation

(1846). American telegraph system, semaphoric as well as magnetic: American semaphore or marine signals, connected with the electro-magnetic telegraph. s.n.

Chicago Style (17th ed.) Citation

American Telegraph System, Semaphoric as Well as Magnetic: American Semaphore or Marine Signals, Connected with the Electro-magnetic Telegraph. S.l: s.n, 1846.

MLA (9th ed.) Citation

American Telegraph System, Semaphoric as Well as Magnetic: American Semaphore or Marine Signals, Connected with the Electro-magnetic Telegraph. s.n, 1846.