Herbst, G. (1976). Alternatives to hierarchies. Martinus Nijhoff.
Cita Chicago Style (17a ed.)Herbst, G. Alternatives to Hierarchies. Leiden: Martinus Nijhoff, 1976.
Cita MLA (9a ed.)Herbst, G. Alternatives to Hierarchies. Martinus Nijhoff, 1976.
Precaución: Estas citas no son 100% exactas.
