Wilberforce, W. Archivmaterialien zu William Wilberforce, 1759-1833.
芝加哥风格引文Wilberforce, William. Archivmaterialien Zu William Wilberforce, 1759-1833.
MLA引文Wilberforce, William. Archivmaterialien Zu William Wilberforce, 1759-1833.
警告：这些引文格式不一定是100％准确.