Toivanen. The Travels of Pieter Albert Bik. Leiden University Press.
芝加哥风格引文Toivanen. The Travels of Pieter Albert Bik. Leiden University Press.
MLA引文Toivanen. The Travels of Pieter Albert Bik. Leiden University Press.
警告：这些引文格式不一定是100％准确.
APA引文