Cita APA (7th ed.)

Ullrich, F., & Schwalm, H. (2005). Bram Bogart: Malerei 1950-2005.

Cita Chicago (17th ed.)

Ullrich, Ferdinand, i Hans-Jürgen Schwalm. Bram Bogart: Malerei 1950-2005. Recklinghausen, 2005.

Cita MLA (8th ed.)

Ullrich, Ferdinand, i Hans-Jürgen Schwalm. Bram Bogart: Malerei 1950-2005. 2005.