- Author: Li Zongzhi
- Language: English
- Year: 2019
- Author: Eric Klinenberg
- Language: English
- Year: 2018
- Author: Kelley A Pesch-Cronin, Nancy E Marion
- Language: English
- Year: 2017
- Author: Royce Hanson, National Research Council (U.S.)
- Language: English
- Year: 1984