APA
Behrens K., Bougna Theophile, Brown W Mark & World Bank. (2016). The world is not yet flat: Transport costs matter!. Washington DC: World Bank.
Chicago
Behrens Kristian, Bougna Theophile, Brown W Mark and World Bank. 2016. The world is not yet flat: Transport costs matter!. Washington DC: World Bank.
Harvard
Behrens K., Bougna Theophile, Brown W Mark and World Bank. (2016). The world is not yet flat: Transport costs matter!. Washington DC: World Bank.
MLA
Behrens Kristian, Bougna Theophile, Brown W Mark and World Bank. The world is not yet flat: Transport costs matter!. Washington DC: World Bank. 2016.