APA (7th ed.) Citation

Gulielmus Altissiodorensis & Herbertus Altissiodorensis. (1251). Summa magistri Guilielmi Antysidorensis.

Chicago Style (17th ed.) Citation

Gulielmus Altissiodorensis and Herbertus Altissiodorensis. Summa Magistri Guilielmi Antysidorensis. 1251.

MLA (9th ed.) Citation

Gulielmus Altissiodorensis and Herbertus Altissiodorensis. Summa Magistri Guilielmi Antysidorensis. 1251.

Warning: These citations may not always be 100% accurate.