APA (7th ed.) Citation

Hongwei, L., Feng, L., & Chaoxiong, D. Limit Cycles and Isochronous Centers in a Class of Ninth Degree System. Wiley.

Chicago Style (17th ed.) Citation

Hongwei, Li, Li Feng, and Du Chaoxiong. Limit Cycles and Isochronous Centers in a Class of Ninth Degree System. Wiley.

MLA (9th ed.) Citation

Hongwei, Li, et al. Limit Cycles and Isochronous Centers in a Class of Ninth Degree System. Wiley.