Cita APA (7a ed.)

Wolff, A., & Maranuk-Rohmeder, M. (1989). The Cathedral of Cologne ([3rd ed.].). Muller und Schindler.

Cita Chicago Style (17a ed.)

Wolff, Arnold, y Margret Maranuk-Rohmeder. The Cathedral of Cologne. [3rd ed.]. Stuttgart: Muller und Schindler, 1989.

Cita MLA (9a ed.)

Wolff, Arnold, y Margret Maranuk-Rohmeder. The Cathedral of Cologne. [3rd ed.]. Muller und Schindler, 1989.