Cita APA (7th ed.)

Friedrich, W., & Killy, W. (1964). Literatur. Fischer.

Cita Chicago (17th ed.)

Friedrich, Wolf-Hartmut, i Walther Killy. Literatur. Frankfurt am Main: Fischer, 1964.

Cita MLA (8th ed.)

Friedrich, Wolf-Hartmut, i Walther Killy. Literatur. Fischer, 1964.