Παραπομπή APA

World book. (1996). World book encyclopedia(vol.22.): :research guide. World book international.

Παραπομπή Chicago Style

World book. World Book Encyclopedia(vol.22.): :research Guide. London: World book international, 1996.

Παραπομπή MLA

World book. World Book Encyclopedia(vol.22.): :research Guide. World book international, 1996.