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 (9th ed.) CitationLandolt, Phillip Louis. Naturalis Obligatio: And Bare Social Duty. 1a. ed. Böhlau, 2000.
Warning: These citations may not always be 100% accurate.