Ross, M. (1978). Rulers and governments of the world. Bowker.
芝加哥风格引文Ross, Marthe. Rulers and Governments of the World. Bowker, 1978.
MLA引文Ross, Marthe. Rulers and Governments of the World. Bowker, 1978.
警告：这些引文格式不一定是100％准确.
APA引文