-. Children-s Britanica, Volume 9 (Helen of Troy - IVY). Encyclopaedia Britannica, Inc.
Chicago Style (17th ed.) Citation-. Children-s Britanica, Volume 9 (Helen of Troy - IVY). Encyclopaedia Britannica, Inc.
MLA (8th ed.) Citation-. Children-s Britanica, Volume 9 (Helen of Troy - IVY). Encyclopaedia Britannica, Inc.
Warning: These citations may not always be 100% accurate.