Berg, L. (1967). Introduction to the operational calculus. North-Holland Pub. Co : J. Wiley.
Citazione stile Chigago Style (17a edizione)Berg, Lothar. Introduction to the Operational Calculus. Amsterdam : New York: North-Holland Pub. Co : J. Wiley, 1967.
Citatione MLA (9a ed.)Berg, Lothar. Introduction to the Operational Calculus. North-Holland Pub. Co : J. Wiley, 1967.