Wunder, G. (1957). Wendel Hipler: Gerd Wunder. Kohlhammer.
Cita Chicago (17th ed.)Wunder, Gerd. Wendel Hipler: Gerd Wunder. Stuttgart: Kohlhammer, 1957.
Cita MLA (8th ed.)Wunder, Gerd. Wendel Hipler: Gerd Wunder. Kohlhammer, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.