Ebeling, K. (2005). Mark Lammert: Arbeitsbücher. Richter.
Cita Chicago (17th ed.)Ebeling, Knut. Mark Lammert: Arbeitsbücher. Düsseldorf: Richter, 2005.
Cita MLA (8th ed.)Ebeling, Knut. Mark Lammert: Arbeitsbücher. Richter, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.