Bollobas, B., & Riordan, O. (2007). Metrics for sparse graphs.
芝加哥风格引文Bollobas, B., 与 O. Riordan. Metrics for Sparse Graphs. 2007.
MLA引文Bollobas, B., 与 O. Riordan. Metrics for Sparse Graphs. 2007.
警告：这些引文格式不一定是100％准确.
APA引文