Nikkel, M. R. (2002). "Hostages of the situation in the Sudan", 1987: Christian missionaries in wartime. Anglican & episcopal history, 71(2), 187-222.
Citazione stile Chigago Style (17a edizione)Nikkel, Marc R. ""Hostages of the Situation in the Sudan", 1987: Christian Missionaries in Wartime." Anglican & Episcopal History 71, no. 2 (2002): 187-222.
Citatione MLA (8a ed.)Nikkel, Marc R. ""Hostages of the Situation in the Sudan", 1987: Christian Missionaries in Wartime." Anglican & Episcopal History, vol. 71, no. 2, 2002, pp. 187-222.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.