Operations and Policy Research, Inc., Washington, D.C. Institute for the comparative Study of Political Systems. (1967). Nicaragua: Election factbook, February 5, 1967. s.n.
Citazione stile Chigago Style (17a edizione)Operations and Policy Research, Inc., Washington, D.C. Institute for the comparative Study of Political Systems. Nicaragua: Election Factbook, February 5, 1967. Washington: s.n, 1967.
Citatione MLA (9a ed.)Operations and Policy Research, Inc., Washington, D.C. Institute for the comparative Study of Political Systems. Nicaragua: Election Factbook, February 5, 1967. s.n, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.