APA (7th ed.) Citation

Grolier International, I. (1991). Grolier academic encyclopedia. Grolier International.

Chicago Style (17th ed.) Citation

Grolier International, Inc. Grolier Academic Encyclopedia. [United States]: Grolier International, 1991.

MLA (9th ed.) Citation

Grolier International, Inc. Grolier Academic Encyclopedia. Grolier International, 1991.

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