Vowinckel, E. (2019). Archivmaterialien zu Ernst Vowinckel, 1872-1935.
芝加哥风格引文Vowinckel, Ernst. Archivmaterialien Zu Ernst Vowinckel, 1872-1935. 2019.
MLA引文Vowinckel, Ernst. Archivmaterialien Zu Ernst Vowinckel, 1872-1935. 2019.
警告：这些引文格式不一定是100％准确.