Gordon Cumming, C. F. Archivmaterialien zu C. F. Gordon Cumming, 1837-1924.
芝加哥风格引文Gordon Cumming, C. F. Archivmaterialien Zu C. F. Gordon Cumming, 1837-1924.
MLA引文Gordon Cumming, C. F. Archivmaterialien Zu C. F. Gordon Cumming, 1837-1924.
警告：这些引文格式不一定是100％准确.