Sandev, N., Ilieva, D., Sizov, I., Rusenova, N., & Iliev, E. (2006). Prevalence of enzootic bovine leukosis in the Republic of Bulgaria in 1997-2004: Prevalence of enzootic bovine leukosis in the Republic of Bulgaria in 1997-2004. Veterinarski arhiv (Tisak), p. 6.
Chicago stil citiranjaSandev, Nikolay, Darinka Ilieva, Ignat Sizov, Nikolina Rusenova, and Emil Iliev. "Prevalence of enzootic bovine leukosis in the Republic of Bulgaria in 1997-2004: Prevalence of enzootic bovine leukosis in the Republic of Bulgaria in 1997-2004." 2006: 6.
MLA stil citiranjaSandev, Nikolay, et al. "Prevalence of enzootic bovine leukosis in the Republic of Bulgaria in 1997-2004: Prevalence of enzootic bovine leukosis in the Republic of Bulgaria in 1997-2004." 2006: 6.