APA (7th ed.) Citation

Ivy,Helen of Troy. (1981). Children's Britannica: Volume 9 (3rd.). Encyclopaedia Britannica International Ltd.

Chicago Style (17th ed.) Citation

Ivy,Helen of Troy. Children's Britannica: Volume 9. 3rd. London: Encyclopaedia Britannica International Ltd, 1981.

MLA (9th ed.) Citation

Ivy,Helen of Troy. Children's Britannica: Volume 9. 3rd. Encyclopaedia Britannica International Ltd, 1981.

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