Willems, P.—Le droit public Romain. Louvain, Paris, 1888.
Zoeller, M.—Römische Staats- und Rechtsaltertümer. Breslau, 1895.
2. THE CITY OF ROME, THE MONARCHY AND THE EARLY HISTORY OF ROME
Bernhoeft, F.—Staat und Recht der römischen Königszeit im Verhältniss zu verwandten Rechten. Stuttgart, 1882.
Dyer, T.—The History of the Kings of Rome. With a prefatory dissertation on its sources and evidence. London, 1868.
Gilbert, O.—Geschichte und Topographie der Stadt Rom. Leipzig, 1883.
Ihne, W.—“Early Rome, from the foundation of the city to its destruction by the Gauls” (Epochs of Ancient History). London, 1876.
Lanciani, R.—Ancient Rome in the light of recent discoveries. London, 1888.
Lanciani, R.—The ruins and excavations of ancient Rome. London, 1897.