Berg, L. (1967). Introduction to the operational calculus. North-Holland Pub. Co : J. Wiley.
Chicago-čujuhus (17. p.)Berg, Lothar. Introduction to the Operational Calculus. Amsterdam : New York: North-Holland Pub. Co : J. Wiley, 1967.
MLA-čujuhus (9. p.)Berg, Lothar. Introduction to the Operational Calculus. North-Holland Pub. Co : J. Wiley, 1967.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.