APA (7th ed.) Citation

Gmür, F. (1953). P.T.T. personnel in Africa. Postal, Telegraph and Telephone Internat.

Chicago Style (17th ed.) Citation

Gmür, Fritz. P.T.T. Personnel in Africa. Berne: Postal, Telegraph and Telephone Internat, 1953.

MLA (9th ed.) Citation

Gmür, Fritz. P.T.T. Personnel in Africa. Postal, Telegraph and Telephone Internat, 1953.

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