APA
Laffont J., Estache A. j. a. & Zhang X. j. a. (2004). Universal service obligations in developing Countries. Washington, D. C: World Bank.
Chicago
Laffont Jean-Jacques, Estache Antonio jt author and Zhang Xinzhu jt author. 2004. Universal service obligations in developing Countries. Washington, D. C: World Bank.
Harvard
Laffont J., Estache A. j. a. and Zhang X. j. a. (2004). Universal service obligations in developing Countries. Washington, D. C: World Bank.
MLA
Laffont Jean-Jacques, Estache Antonio jt author and Zhang Xinzhu jt author. Universal service obligations in developing Countries. Washington, D. C: World Bank. 2004.