Cita APA (7th ed.)

Horwath, A., & Scheugl, H. (1998). Kurt Kren 1929 - 1998. Springerin.

Cita Chicago (17th ed.)

Horwath, Alexander, i Hans Scheugl. "Kurt Kren 1929 - 1998." Springerin 1998.

Cita MLA (8th ed.)

Horwath, Alexander, i Hans Scheugl. "Kurt Kren 1929 - 1998." Springerin, 1998.