APA (7th ed.) Citation

Encyclopaedia Britannica, inc. (1990). Children's Britannica (4th ed.). Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Encyclopaedia Britannica, inc. Children's Britannica. 4th ed. Auckland ; : Chicago: Encyclopaedia Britannica, 1990.

MLA (9th ed.) Citation

Encyclopaedia Britannica, inc. Children's Britannica. 4th ed. Encyclopaedia Britannica, 1990.

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