Cita APA (7a ed.)
(1994). <The> 1994 world book year book: <the> annual supplement to The World Book Encyclopedia. <A> review of the events of 1993. World Book.
Cita Chicago Style (17a ed.)
<The> 1994 World Book Year Book: <the> Annual Supplement to The World Book Encyclopedia. <A> Review of the Events of 1993. Chicago: World Book, 1994.
Cita MLA (9a ed.)
<The> 1994 World Book Year Book: <the> Annual Supplement to The World Book Encyclopedia. <A> Review of the Events of 1993. World Book, 1994.
Precaución: Estas citas no son 100% exactas.