Achinger, H., Hoffner, J., Muthesius, H., & Neundorfer, L. (1956). Los seguros sociales. Rialp.
Chicago Style (17th ed.) CitationAchinger, Hans, Joseph Hoffner, Hans Muthesius, and Ludwing Neundorfer. Los Seguros Sociales. Madrid: Rialp, 1956.
MLA (9th ed.) CitationAchinger, Hans, et al. Los Seguros Sociales. Rialp, 1956.