Berg, L. (1967). Introduction to the operational calculus. North-Holland Pub. Co : J. Wiley.
Cita Chicago (17th ed.)Berg, Lothar. Introduction to the Operational Calculus. Amsterdam : New York: North-Holland Pub. Co : J. Wiley, 1967.
Cita MLA (9th ed.)Berg, Lothar. Introduction to the Operational Calculus. North-Holland Pub. Co : J. Wiley, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.