APA (7th ed.) Citation

(1970). Chambers's encyclopaedia. Yearbook (1969-1975.). International Learning Systems.

Chicago Style (17th ed.) Citation

Chambers's Encyclopaedia. Yearbook. 1969-1975. London: International Learning Systems, 1970.

MLA (9th ed.) Citation

Chambers's Encyclopaedia. Yearbook. 1969-1975. International Learning Systems, 1970.

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