Cita APA (7a ed.)

Alföldy, G. (1974). The crisis of the third century as seen by contemporaries. [s.n.].

Cita Chicago Style (17a ed.)

Alföldy, Géza. The Crisis of the Third Century as Seen by Contemporaries. [S.l.]: [s.n.], 1974.

Cita MLA (9a ed.)

Alföldy, Géza. The Crisis of the Third Century as Seen by Contemporaries. [s.n.], 1974.