APA (7th ed.) Citation

Oppelt, N. T. (1989). Guide to prehistoric ruins of the Southwest. Pruett Publ. Co.

Chicago Style (17th ed.) Citation

Oppelt, Norman T. Guide to Prehistoric Ruins of the Southwest. Pruett Publ. Co, 1989.

MLA (8th ed.) Citation

Oppelt, Norman T. Guide to Prehistoric Ruins of the Southwest. Pruett Publ. Co, 1989.

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