Jus civitatis

JUS CIVITATIS. Among the Romans the collection of laws which are to be observed among all the members of a nation were so called. It is opposed to jus gentium, which is the law which regulates the affairs of nations among themselves. 2 Lepage, El. du Dr. ch. 5, page l.

References in classic literature ?
Their manner was to grant naturalization (which they called jus civitatis), and to grant it in the highest degree; that is, not only jus commercii, jus connubii, jus haereditatis; but also jus suffragii, and jus honorum.