Jocks, H. (1987). Die Langheimer: Von Heinz-Norbert Jocks. Kunstforum.
Cita Chicago (17th ed.)Jocks, Heinz-Norbert. "Die Langheimer: Von Heinz-Norbert Jocks." Kunstforum 1987.
Cita MLA (8th ed.)Jocks, Heinz-Norbert. "Die Langheimer: Von Heinz-Norbert Jocks." Kunstforum, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.