APA (7th ed.) Citation

Johannes, v. S. (1848). Opera omnia. Opera omnia.

Chicago Style (17th ed.) Citation

Johannes, von Salisbury. "Opera Omnia." Opera Omnia 1848.

MLA (9th ed.) Citation

Johannes, von Salisbury. "Opera Omnia." Opera Omnia, 1848.

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