Cita APA (7th ed.)
Collins, R. O. (1971). Land beyond the rivers: The southern Sudan, 1898-1918. Yale University Press.
Cita Chicago (17th ed.)
Collins, Robert O. Land Beyond the Rivers: The Southern Sudan, 1898-1918. New Haven: Yale University Press, 1971.
Cita MLA (9th ed.)
Collins, Robert O. Land Beyond the Rivers: The Southern Sudan, 1898-1918. Yale University Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.