APA (7th ed.) Citation

Siemens Brothers & Co. (London). (1869). Instructions for the use of Siemens brothers' alphabetical telegraph.

Chicago Style (17th ed.) Citation

Siemens Brothers & Co. (London). Instructions for the Use of Siemens Brothers' Alphabetical Telegraph. [London], 1869.

MLA (9th ed.) Citation

Siemens Brothers & Co. (London). Instructions for the Use of Siemens Brothers' Alphabetical Telegraph. 1869.

Warning: These citations may not always be 100% accurate.