APA (7e ed.) Bronvermelding
(1993). Discovering the wonders of our world (ed.). The reader's digest association.
Chicago (17e ed.) Bronvermelding
Discovering the Wonders of Our World. ed. London: The reader's digest association, 1993.
MLA (9e ed.) Bronvermelding
Discovering the Wonders of Our World. ed. The reader's digest association, 1993.
Let op: Deze citaties zijn niet altijd 100% accuraat.