APA (7th ed.) Citation

(1989). Longman illustrated encyclopedia of world history. Ivy Leaf.

Chicago Style (17th ed.) Citation

Longman Illustrated Encyclopedia of World History. London: Ivy Leaf, 1989.

MLA (9th ed.) Citation

Longman Illustrated Encyclopedia of World History. Ivy Leaf, 1989.

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