APA (7th ed.) Citation

Helmolt, H. F. (1902). The history of the world: A survey of man's record. Dodd, Mead and company.

Chicago Style (17th ed.) Citation

Helmolt, Hans Ferdinand. The History of the World: A Survey of Man's Record. New York: Dodd, Mead and company, 1902.

MLA (9th ed.) Citation

Helmolt, Hans Ferdinand. The History of the World: A Survey of Man's Record. Dodd, Mead and company, 1902.