- Author: Marcus Porcius Cato Ernest Brehaut
- Language: English
- Year: 1933
- Author: William Haller
- Language: English
- Year: 1934
- Author: William E. Lunt
- Language: English
- Year: 1934
- Author: von Bremen Adam Francis Joseph Tschan
- Language: English
- Year: 1959
- Author: Harry August Rositzke
- Language: English
- Year: 1951
- Author: Pope Sylvester II Harriet Pratt Lattin
- Language: English
- Year: 1961
- Author: William Johnston
- Language: English
- Year: 2004
- Author: Julie Peteet
- Language: English
- Year: 1992
- Author: English Institute
- Language: English
- Year: 1975