APA (7th ed.) Citation

Allen, E. A. The Prehistoric World; Or, Vanished Races.

Chicago Style (17th ed.) Citation

Allen, Emory Adams. The Prehistoric World; Or, Vanished Races.

MLA (9th ed.) Citation

Allen, Emory Adams. The Prehistoric World; Or, Vanished Races.

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