APA (7th ed.) Citation

Grolier. (1976). Encyclopedia international: Index. Volume XX. Grolier Incorporated.

Chicago Style (17th ed.) Citation

Grolier. Encyclopedia International: Index. Volume XX. Grolier Incorporated, 1976.

MLA (8th ed.) Citation

Grolier. Encyclopedia International: Index. Volume XX. Grolier Incorporated, 1976.

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