APA (7th ed.) Citation

Bacon, R., & Burke, R. B. (1928). The Opus majus of Roger Bacon. University of Pennsylvania press ; H. Milford, Oxford university press.

Chicago Style (17th ed.) Citation

Bacon, Roger, and Robert Belle Burke. The Opus Majus of Roger Bacon. Philadelphia : London: University of Pennsylvania press ; H. Milford, Oxford university press, 1928.

MLA (9th ed.) Citation

Bacon, Roger, and Robert Belle Burke. The Opus Majus of Roger Bacon. University of Pennsylvania press ; H. Milford, Oxford university press, 1928.