APA (7th ed.) Citation

Hutchins, R. M. (1961). The Great ideas today 1961. Encyclopaedia Britannica, Inc.

Chicago Style (17th ed.) Citation

Hutchins, Robert M. The Great Ideas Today 1961. Encyclopaedia Britannica, Inc, 1961.

MLA (8th ed.) Citation

Hutchins, Robert M. The Great Ideas Today 1961. Encyclopaedia Britannica, Inc, 1961.

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