APA (7th ed.) Citation

Xu, X., Liang, M., & Luo, H. (2018). Ramsey Theory: Unsolved Problems and Results.

Chicago Style (17th ed.) Citation

Xu, Xiaodong, Meilian Liang, and Haipeng Luo. Ramsey Theory: Unsolved Problems and Results. 2018.

MLA (9th ed.) Citation

Xu, Xiaodong, et al. Ramsey Theory: Unsolved Problems and Results. 2018.