Gaya APA

Nault, William H., Groman, Jeff. (1992). The World Book Encyclopedia, Volume 18: So - Sz . London: World Book, Inc..

Gaya Chicago

Nault, William H., Groman, Jeff. The World Book Encyclopedia, Volume 18: So - Sz. London: World Book, Inc., 1992. Text.

Gaya MLA

Nault, William H., Groman, Jeff. The World Book Encyclopedia, Volume 18: So - Sz. London: World Book, Inc., 1992. Text.

Gaya Turabian

Nault, William H., Groman, Jeff. The World Book Encyclopedia, Volume 18: So - Sz. London: World Book, Inc., 1992. Print.