Punia, N. (1990). The dynamics of Indo soviet eco relations. Anu Books.
芝加哥风格引文Punia, Narendra. The Dynamics of Indo Soviet Eco Relations. Meerut: Anu Books, 1990.
MLA引文Punia, Narendra. The Dynamics of Indo Soviet Eco Relations. Anu Books, 1990.
警告：这些引文格式不一定是100％准确.