APA (7th ed.) Citation

Bollobas, B., & Riordan, O. (2007). Metrics for sparse graphs.

Chicago Style (17th ed.) Citation

Bollobas, B., and O. Riordan. Metrics for Sparse Graphs. 2007.

MLA (9th ed.) Citation

Bollobas, B., and O. Riordan. Metrics for Sparse Graphs. 2007.

Warning: These citations may not always be 100% accurate.