Simpson, G. G. Archivmaterialien zu George Gaylord Simpson, 1902-1984.
芝加哥风格引文Simpson, George Gaylord. Archivmaterialien Zu George Gaylord Simpson, 1902-1984.
MLA引文Simpson, George Gaylord. Archivmaterialien Zu George Gaylord Simpson, 1902-1984.
警告：这些引文格式不一定是100％准确.