APA (7th ed.) Citation

Walter de Gruyter und Co. (1979). The international geographic encyclopedia and atlas. De Gruyter.

Chicago Style (17th ed.) Citation

Walter de Gruyter und Co. The International Geographic Encyclopedia and Atlas. Berlin: De Gruyter, 1979.

MLA (9th ed.) Citation

Walter de Gruyter und Co. The International Geographic Encyclopedia and Atlas. De Gruyter, 1979.

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