APA Style

Grolier : Encyclopedia of knowledge Vol 12. (1990). Danbury: Grolier Incorporated.

Chicago Style

Grolier : Encyclopedia of knowledge Vol 12. . Danbury: Grolier Incorporated, 1990. Text.

MLA Style

Grolier : Encyclopedia of knowledge Vol 12. . Danbury: Grolier Incorporated, 1990. Text.

Turabian Style

Grolier : Encyclopedia of knowledge Vol 12. Danbury: Grolier Incorporated, 1990. Print.