APA
Pratt Lattin H., . (1961). The letters of Gerbert with his Papal privileges as Sylvester II. New York: Columbia University Press.
Chicago
Pratt Lattin Harriet, . 1961. The letters of Gerbert with his Papal privileges as Sylvester II. New York: Columbia University Press.
Harvard
Pratt Lattin H., . (1961). The letters of Gerbert with his Papal privileges as Sylvester II. New York: Columbia University Press.
MLA
Pratt Lattin Harriet, . The letters of Gerbert with his Papal privileges as Sylvester II. New York: Columbia University Press. 1961.
