(PICUM), P. f. I. C. o. U. M. 469/3/00027: Briefwisseling van Pieter Muller.
Citazione stile Chigago Style (17a edizione)(PICUM), Platform for International Cooperation on Undocumented Migrants. 469/3/00027: Briefwisseling Van Pieter Muller.
Citatione MLA (8a ed.)(PICUM), Platform for International Cooperation on Undocumented Migrants. 469/3/00027: Briefwisseling Van Pieter Muller.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.