APA (7th ed.) Citation

Royston & Hawksley. (1995). My big book of the world. Ultimate Editions.

Chicago Style (17th ed.) Citation

Royston and Hawksley. My Big Book of the World. London: Ultimate Editions, 1995.

MLA (8th ed.) Citation

Royston and Hawksley. My Big Book of the World. Ultimate Editions, 1995.

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