APA-viite (7. p.)
(1993). Discovering the wonders of our world (ed.). The reader's digest association.
Chicago-viite (17. p.)
Discovering the Wonders of Our World. ed. London: The reader's digest association, 1993.
MLA-viite (9. p.)
Discovering the Wonders of Our World. ed. The reader's digest association, 1993.
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