APA (7th ed.) Citation

(1971). Britanica Junior Encyclopaedia: For Boys and Girls 7. Encyclopaedia Britanica.

Chicago Style (17th ed.) Citation

Britanica Junior Encyclopaedia: For Boys and Girls 7. London: Encyclopaedia Britanica, 1971.

MLA (9th ed.) Citation

Britanica Junior Encyclopaedia: For Boys and Girls 7. Encyclopaedia Britanica, 1971.

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