APA (7th ed.) Citation

Irnerius & Fitting, H. (1894). Summa codicis des Irnerius. J. Guttentag.

Chicago Style (17th ed.) Citation

Irnerius and Hermann Fitting. Summa Codicis Des Irnerius. Berlin, Deutschland: J. Guttentag, 1894.

MLA (9th ed.) Citation

Irnerius and Hermann Fitting. Summa Codicis Des Irnerius. J. Guttentag, 1894.