Nigra, C. (2019). Archivmaterialien zu Costantino Nigra, 1828-1907.
芝加哥风格引文Nigra, Costantino. Archivmaterialien Zu Costantino Nigra, 1828-1907. 2019.
MLA引文Nigra, Costantino. Archivmaterialien Zu Costantino Nigra, 1828-1907. 2019.
警告：这些引文格式不一定是100％准确.