Herschel, C. (1899). The two books on the water supply of the city of Rome of Sextus Julius Frontinus, water commissioner of the city of Rome A.D. 97 (1a. ed.). Dana Estes and Company.

Herschel, Clemens. The Two Books on the Water Supply of the City of Rome of Sextus Julius Frontinus, Water Commissioner of the City of Rome A.D. 97. 1a. ed. Boston: Dana Estes and Company, 1899.

Herschel, Clemens. The Two Books on the Water Supply of the City of Rome of Sextus Julius Frontinus, Water Commissioner of the City of Rome A.D. 97. 1a. ed. Dana Estes and Company, 1899.