APA (7th ed.) Citation

The_World... (1956). The World book encyclopedia: In eighteen volumes and reading and study guide. Field Enterprises.

Chicago Style (17th ed.) Citation

The_World... The World Book Encyclopedia: In Eighteen Volumes and Reading and Study Guide. Field Enterprises, 1956.

MLA (8th ed.) Citation

The_World... The World Book Encyclopedia: In Eighteen Volumes and Reading and Study Guide. Field Enterprises, 1956.

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