APA (7th ed.) Citation

Sun, G., Gao, B., & Zhang, L. High-Speed Rail Opening, Economic Agglomeration, and Urban Innovation. SAGE Publishing.

Chicago Style (17th ed.) Citation

Sun, Guangzhao, Biao Gao, and Liguo Zhang. High-Speed Rail Opening, Economic Agglomeration, and Urban Innovation. SAGE Publishing.

MLA (9th ed.) Citation

Sun, Guangzhao, et al. High-Speed Rail Opening, Economic Agglomeration, and Urban Innovation. SAGE Publishing.

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