@book{93726,
	author = {Ping, Peng,},
	title = {World Internet Development Report 2018 :},
	publisher = {Springer,},
	year = {2020},
	address = {Singapore :},
	url = {https://link-springer-com.libraryumpsa.idm.oclc.org/book/10.1007/978-981-15-4067-7}
}