APA (7th ed.) Citation

Roger, B. (1964). The 'opus majus of Roger Bacon. The 'opus majus of Roger Bacon.

Chicago Style (17th ed.) Citation

Roger, Bacon. "The 'Opus Majus of Roger Bacon." The 'Opus Majus of Roger Bacon 1964.

MLA (9th ed.) Citation

Roger, Bacon. "The 'Opus Majus of Roger Bacon." The 'Opus Majus of Roger Bacon, 1964.

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