The institute of national planning, Elrayes, a., & Nosseir, a. (2010). Using pepa to model the unemployment problem. The institute of national planning.
Чикаго стиль цитування (17-те видання)The institute of national planning, amani Elrayes, та ann Nosseir. Using Pepa to Model the Unemployment Problem. cairo: The institute of national planning, 2010.
Стиль цитування MLA (9-ме видання)The institute of national planning, et al. Using Pepa to Model the Unemployment Problem. The institute of national planning, 2010.