Droege, W. (1920). The ABC Universal Commercial Telegraphic Code: Specially for the use of shipowners, bankers, merchants, brokers, underwriters, solicitors, engineers, forwarding agents and tourists ect. and as a general code suitable for everyone ; (with five-letter artifical codewords) (6th ed.). Pitman [u.a.].
Chicago-Zitierstil (17. Ausg.)Droege, William. The ABC Universal Commercial Telegraphic Code: Specially for the Use of Shipowners, Bankers, Merchants, Brokers, Underwriters, Solicitors, Engineers, Forwarding Agents and Tourists Ect. and as a General Code Suitable for Everyone ; (with Five-letter Artifical Codewords). 6th ed. London [u.a.]: Pitman [u.a.], 1920.
MLA-Zitierstil (9. Ausg.)Droege, William. The ABC Universal Commercial Telegraphic Code: Specially for the Use of Shipowners, Bankers, Merchants, Brokers, Underwriters, Solicitors, Engineers, Forwarding Agents and Tourists Ect. and as a General Code Suitable for Everyone ; (with Five-letter Artifical Codewords). 6th ed. Pitman [u.a.], 1920.