APA (7th ed.) Citation

Xu, K., Wang, X., Liang, P., An, H., Sun, H., Han, W., & Li, Q. (2017). Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests. Nature Portfolio.

Chicago Style (17th ed.) Citation

Xu, Kai, Xiangping Wang, Penghong Liang, Hailong An, Han Sun, Wei Han, and Qiaoyan Li. Tree-ring Widths Are Good Proxies of Annual Variation in Forest Productivity in Temperate Forests. Nature Portfolio, 2017.

MLA (8th ed.) Citation

Xu, Kai, et al. Tree-ring Widths Are Good Proxies of Annual Variation in Forest Productivity in Temperate Forests. Nature Portfolio, 2017.