APA (7th ed.) Citation

Hergé. (1975). Les 7 boules de cristal. Casterman.

Chicago Style (17th ed.) Citation

Hergé. Les 7 Boules De Cristal. [Tournai]: Casterman, 1975.

MLA (9th ed.) Citation

Hergé. Les 7 Boules De Cristal. Casterman, 1975.

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