Cita APA (7a ed.)

Parker, J. H. (1876). The forum romanum. James Parker and Co. [etc.].

Cita Chicago Style (17a ed.)

Parker, John Henry. The Forum Romanum. Oxford [etc.]: James Parker and Co. [etc.], 1876.

Cita MLA (9a ed.)

Parker, John Henry. The Forum Romanum. James Parker and Co. [etc.], 1876.