Piggott, S. (1952). Prehistoric India: To 1000 B.C. Penguin Books.
芝加哥风格引文Piggott, Stuart. Prehistoric India: To 1000 B.C. Middlesex: Penguin Books, 1952.
MLA引文Piggott, Stuart. Prehistoric India: To 1000 B.C. Penguin Books, 1952.
警告：这些引文格式不一定是100％准确.