Landolt, P. L. (2000). Naturalis obligatio: And bare social duty (1a. ed.). Böhlau.
Chicago Style (17th ed.) CitationLandolt, Phillip Louis. Naturalis Obligatio: And Bare Social Duty. 1a. ed. Colonia: Böhlau, 2000.
MLA citiranjeLandolt, Phillip Louis. Naturalis Obligatio: And Bare Social Duty. 1a. ed. Böhlau, 2000.
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