SINGH, S. (2018). COMBINATORICS AND GRAPH THEORY (3RD.). KHANNA BOOK PUBLISHING Pvt. Ltd., NEW DELHI.
芝加哥风格引文SINGH, SB. COMBINATORICS AND GRAPH THEORY. 3RD. KHANNA BOOK PUBLISHING Pvt. Ltd., NEW DELHI, 2018.
MLA引文SINGH, SB. COMBINATORICS AND GRAPH THEORY. 3RD. KHANNA BOOK PUBLISHING Pvt. Ltd., NEW DELHI, 2018.
警告：这些引文格式不一定是100％准确.