APA (7th ed.) Citation

Loon, H. V. (1951). The Story of mankind. George G. Harrap.

Chicago Style (17th ed.) Citation

Loon, Hendrik Van. The Story of Mankind. George G. Harrap, 1951.

MLA (8th ed.) Citation

Loon, Hendrik Van. The Story of Mankind. George G. Harrap, 1951.

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