Cita APA (7a ed.)
(1979). The 1979 world book year book.: The annual supplement to the world book encyclopedia (ed.). World book- childcraft international, Inc..
Cita Chicago Style (17a ed.)
The 1979 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. Chicago: World book- childcraft international, Inc., 1979.
Cita MLA (9a ed.)
The 1979 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. World book- childcraft international, Inc., 1979.
Precaución: Estas citas no son 100% exactas.