APA (7th ed.) Citation

(1986). The Encyclopedia Americana Volume 20 Navajo to Opium. Grolier Incorporated.

Chicago Style (17th ed.) Citation

The Encyclopedia Americana Volume 20 Navajo to Opium. Grolier Incorporated, 1986.

MLA (8th ed.) Citation

The Encyclopedia Americana Volume 20 Navajo to Opium. Grolier Incorporated, 1986.

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