APA (7th ed.) Citation

(1981). Bulgaria (Second edition, completely revised.). Les Éditions Nagel.

Chicago Style (17th ed.) Citation

Bulgaria. Second edition, completely revised. Genève ; Paris ; Munich: Les Éditions Nagel, 1981.

MLA (9th ed.) Citation

Bulgaria. Second edition, completely revised. Les Éditions Nagel, 1981.

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