Cita APA (7a ed.)
(1988). Book of Nations: The World Book. Desk Reference Set. The World Book,Inc.
Cita Chicago Style (17a ed.)
Book of Nations: The World Book. Desk Reference Set. Chicago: The World Book,Inc, 1988.
Cita MLA (9a ed.)
Book of Nations: The World Book. Desk Reference Set. The World Book,Inc, 1988.
Precaución: Estas citas no son 100% exactas.