Cita APA (7a ed.)

Study Group on a European Civil Code, Bar, C. v., Swann, S., McCannon, P., & Singleton, S. (2010). Unjustified enrichment (PEL Unj. Enr.). Oxford University Press.

Cita Chicago Style (17a ed.)

Study Group on a European Civil Code, Christian von Bar, Stephen Swann, Pádraic McCannon, y Susan Singleton. Unjustified Enrichment (PEL Unj. Enr.). Oxford ; New York: Oxford University Press, 2010.

Cita MLA (9a ed.)

Study Group on a European Civil Code, et al. Unjustified Enrichment (PEL Unj. Enr.). Oxford University Press, 2010.