APA (7th ed.) Citation

Bonifacio, V., Gebauer, G. J., & Löfstedt, B. (1980). Ars grammatica. Brepols.

Chicago Style (17th ed.) Citation

Bonifacio, Vynfreth, George John Gebauer, and Bengt Löfstedt. Ars Grammatica. Tournai: Brepols, 1980.

MLA (9th ed.) Citation

Bonifacio, Vynfreth, et al. Ars Grammatica. Brepols, 1980.