APA-viite (7. p.)
(1988). The 1988 world book year book.: The annual supplement to the world book encyclopedia (ed.). World book, Inc..
Chicago-viite (17. p.)
The 1988 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. Chicago: World book, Inc., 1988.
MLA-viite (9. p.)
The 1988 World Book Year Book.: The Annual Supplement to the World Book Encyclopedia. ed. World book, Inc., 1988.
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