Cita APA (7a ed.)

Hanson, C. A. (1989). Were there libraries in Roman Spain? [s.n.].

Cita Chicago Style (17a ed.)

Hanson, Carl A. Were There Libraries in Roman Spain? [S.l.]: [s.n.], 1989.

Cita MLA (9a ed.)

Hanson, Carl A. Were There Libraries in Roman Spain? [s.n.], 1989.