APA (7th ed.) Citation

Helmolt, H. F. (1902). Weltgeschichte. Bibliogr. Inst..

Chicago Style (17th ed.) Citation

Helmolt, Hans Ferdinand. Weltgeschichte. Leipzig [u.a.]: Bibliogr. Inst., 1902.

MLA (8th ed.) Citation

Helmolt, Hans Ferdinand. Weltgeschichte. Bibliogr. Inst., 1902.

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