Cojocaru, Stefan. 2007. “Strategii de Esantionare Cantitativa in Procesul de Evaluare a Programelor”. Revista de Cercetare Si Interventie Sociala 19 (December): 115-27. https://www.rcis.ro/journal/article/view/222-strategii-de-esantionare-cantitativa-in-procesul-de.