APA (7th ed.) Citation

Engel, G., & Engel, G. (1985). Ravensberger Regesten. Westfalen-Verl.

Chicago Style (17th ed.) Citation

Engel, Gustav, and Gustav Engel. Ravensberger Regesten. Bielefeld ; Dortmund ; Münster: Westfalen-Verl, 1985.

MLA (9th ed.) Citation

Engel, Gustav, and Gustav Engel. Ravensberger Regesten. Westfalen-Verl, 1985.