Cita APA (7th ed.)
Friedman, S. D. (2000). Fine structure and class forcing. Walter de Gruyter.
Cita Chicago (17th ed.)
Friedman, Sy D. Fine Structure and Class Forcing. Berlin ; New York: Walter de Gruyter, 2000.
Cita MLA (9th ed.)
Friedman, Sy D. Fine Structure and Class Forcing. Walter de Gruyter, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.