Cita APA (7a ed.)

Gudeman, A. (1931). The sources of Aristotle's Poetics. [s.n.].

Cita Chicago Style (17a ed.)

Gudeman, Alfred. The Sources of Aristotle's Poetics. [S.l.]: [s.n.], 1931.

Cita MLA (9a ed.)

Gudeman, Alfred. The Sources of Aristotle's Poetics. [s.n.], 1931.