APA (7th ed.) Citation

Beal, G. (1990). Factbook of the 20th century. Rainbow Books.

Chicago Style (17th ed.) Citation

Beal, George. Factbook of the 20th Century. London: Rainbow Books, 1990.

MLA (9th ed.) Citation

Beal, George. Factbook of the 20th Century. Rainbow Books, 1990.

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