Abraham, R. (1981). Collisions: In Memoriam Kongresshalle ; Berlin. Artforum.
Cita Chicago (17th ed.)Abraham, Raimund. "Collisions: In Memoriam Kongresshalle ; Berlin." Artforum 1981.
Cita MLA (8th ed.)Abraham, Raimund. "Collisions: In Memoriam Kongresshalle ; Berlin." Artforum, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.