Molland, G. Sign conceptions in mathematics in the Latin Middle Ages: George Molland. [Semiotik, 1].(1997).
Cita Chicago (17th ed.)Molland, George. "Sign Conceptions in Mathematics in the Latin Middle Ages: George Molland." [Semiotik, 1].(1997) .
Cita MLA (8th ed.)Molland, George. "Sign Conceptions in Mathematics in the Latin Middle Ages: George Molland." [Semiotik, 1].(1997), .
Atenció: Aquestes cites poden no estar 100% correctes.