Ladd, E. C. (1975). The divided academy. Norton.
Cita Chicago (17th ed.)Ladd, Everett Carll. The Divided Academy. NewYork: Norton, 1975.
Cita MLA (9th ed.)Ladd, Everett Carll. The Divided Academy. Norton, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.