APA Edition Citation

(2013). WORLD BOOK OF ENCYCLOPAEDIA VOL.XXI -W-X-Y-Z. WorLD BOOK, CHICAGO.

Chicago Edition Citation

WORLD BOOK OF ENCYCLOPAEDIA VOL.XXI -W-X-Y-Z. UNITED STATES: WorLD BOOK, CHICAGO, 2013.

MLA Edition Citation

WORLD BOOK OF ENCYCLOPAEDIA VOL.XXI -W-X-Y-Z. WorLD BOOK, CHICAGO, 2013.

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