APA (7th ed.) Citation

Guilelmus Apuliensis ca. 11./12. Jh & Wilmans, R. (1851). Gesta Roberti Wiscardi.

Chicago Style (17th ed.) Citation

Guilelmus Apuliensis ca. 11./12. Jh and Roger Wilmans. Gesta Roberti Wiscardi. 1851.

MLA (9th ed.) Citation

Guilelmus Apuliensis ca. 11./12. Jh and Roger Wilmans. Gesta Roberti Wiscardi. 1851.

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