APA (7th ed.) Zitazioa
Daniel, D. N.. (1970). Violence and the struggle for existence. Little Brown.
Chicago Style (17th ed.) Zitazioa
Daniel, David N. Violence and the Struggle for Existence. Boston: Little Brown, 1970.
MLA (9th ed.) Zitazioa
Daniel, David N. Violence and the Struggle for Existence. Little Brown, 1970.
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