APA (7th ed.) Citation

(1978). Children's Britannica Volume 20 Index and Atlas of the World. Encyclopedia Britannica International, LTD.

Chicago Style (17th ed.) Citation

Children's Britannica Volume 20 Index and Atlas of the World. Encyclopedia Britannica International, LTD, 1978.

MLA (8th ed.) Citation

Children's Britannica Volume 20 Index and Atlas of the World. Encyclopedia Britannica International, LTD, 1978.

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