  In this paper, upper limits on the total luminosity of ultra-high-energy
cosmic rays (UHECR) (E > $10^{18}$ eV) are determined for five individual
sources. The upper limit on the integral flux of GeV-TeV gamma-rays of a given
source is used to extract the upper limit on the total UHECR luminosity. The
correlation between upper limit on the integral GeVTeV gamma-ray flux and upper
limit on the UHECR luminosity is established through the cascading process that
takes place during propagation of the cosmic rays in the background radiation
fields, as explained in reference [1]. Twenty-eight sources measured by
FERMI-LAT, VERITAS and MAGIC observatories have been studied. The measured
upper limit on the GeV-TeV gamma-ray flux is restrictive enough to allow the
calculation of an upper limit on the total UHECR cosmic-ray luminosity of five
sources. The upper limit on the UHECR cosmicray luminosity of these sources is
shown for several assumptions on the emission mechanism. For all studied
sources an upper limit on the ultra-high-energy proton luminosity is also set.
