| Author(s): | Block, Elaine C. |
| Title: | Misericords in the Rhineland : Images of medieval life |
| City: | Lakewood (Ohio) |
| Year: | 1996 |
| Journal/Volume: | The Profane Arts of the Middle Ages / Les Arts profanes au moyen âge |
| Page details: | p. 123 |
| Author(s): | Hilger, Hans Peter |
| Title: | Kalkar |
| City: | Düsseldorf |
| Year: | 1964 |
| Journal/Volume: | Die Denkmäler des Rheinlandes: Kreis Kleve |
| Page details: | p. 31 |
| Author(s): | Werd, Guido de |
| Title: | St. Nicolaikirche Kalkar |
| City: | München |
| Year: | 2002 |
| Page details: | p. 116-117, nr. 6 |