APA (7th ed.) Citation

Orioli, F., & Bufalini, M. (1850). Letera II. s.n.

Chicago Style (17th ed.) Citation

Orioli, Francesco, and Maurizio Bufalini. Letera II. [S.l.: s.n, 1850.

MLA (9th ed.) Citation

Orioli, Francesco, and Maurizio Bufalini. Letera II. s.n, 1850.

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