metz, h. c. (1992). sudan: A country study. washington, d.c.: federal research division, library of congress.
Chicago Style Citationmetz, helen chapin. Sudan: A Country Study. washington, d.c.: federal research division, library of congress, 1992.
MLA Citationmetz, helen chapin. Sudan: A Country Study. washington, d.c.: federal research division, library of congress, 1992.
