van Dam, E., & van der Erf, R. (1998). Asylum-seekers and refugees, a statistical report: Volume 3: Central European Countries.
Chicago-Zitierstil (17. Ausg.)van Dam, Elsbeth, 与 Rob van der Erf. Asylum-seekers and Refugees, a Statistical Report: Volume 3: Central European Countries. Luxembourg, 1998.
MLA-Zitierstil (8. Ausg.)van Dam, Elsbeth, 与 Rob van der Erf. Asylum-seekers and Refugees, a Statistical Report: Volume 3: Central European Countries. 1998.
警告：这些引文格式不一定是100％准确.