Cita APA (7th ed.)
(1968). Uni-Text. Vieweg; Winter.
Cita Chicago (17th ed.)
Uni-Text. Braunschweig; Basel: Vieweg; Winter, 1968.
Cita MLA (9th ed.)
Uni-Text. Vieweg; Winter, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.