APA Edition Citation

Nault, W. H. a. . e. a. E. (1995). World book encyclopedia U-V Vol.20.

Chicago Edition Citation

Nault, William H and et al. Ed. World Book Encyclopedia U-V Vol.20. World Book, Chicago, 1995.

MLA Edition Citation

Nault, William H and et al. Ed. World Book Encyclopedia U-V Vol.20. 1995.