APA (7th ed.) Citation

Cartographia Kft & Traxel, D. (1997). Radio amateur's map of the world: Prefix map of the world 1:42 000 000 ([4th ed.].). Cartographia.

Chicago Style (17th ed.) Citation

Cartographia Kft and Dieter Traxel. Radio Amateur's Map of the World: Prefix Map of the World 1:42 000 000. [4th ed.]. Budapest: Cartographia, 1997.

MLA (9th ed.) Citation

Cartographia Kft and Dieter Traxel. Radio Amateur's Map of the World: Prefix Map of the World 1:42 000 000. [4th ed.]. Cartographia, 1997.