Schrage, E. J. H. (1999). Unjust enrichment: The comparative legal history of the law of restitution (2a. ed.). Duncker & Humblot.
Chicago Style (17. basım) AtıfSchrage, Eltjo J. H. Unjust Enrichment: The Comparative Legal History of the Law of Restitution. 2a. ed. Berlín: Duncker & Humblot, 1999.
MLA (9th ed.) AtıfSchrage, Eltjo J. H. Unjust Enrichment: The Comparative Legal History of the Law of Restitution. 2a. ed. Duncker & Humblot, 1999.
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