Cita APA (7a ed.)

Petöfi(y), A. (1850). Der Held Janos. [s.n.].

Cita Chicago Style (17a ed.)

Petöfi(y), Alexander. Der Held Janos. Stuttgart: [s.n.], 1850.

Cita MLA (9a ed.)

Petöfi(y), Alexander. Der Held Janos. [s.n.], 1850.