APA (7th ed.) Citation

(1950). Picture encyclopedia: 24,000 illustrations arranged in special groups for ready reference. Research Book Co..

Chicago Style (17th ed.) Citation

Picture Encyclopedia: 24,000 Illustrations Arranged in Special Groups for Ready Reference. New York: Research Book Co., 1950.

MLA (9th ed.) Citation

Picture Encyclopedia: 24,000 Illustrations Arranged in Special Groups for Ready Reference. Research Book Co., 1950.

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