APA
Lee V. E., . (1989). The effects of single-sex schooling on student achievement and attitudes in Nigeria. Washington, DC: World Bank.
Chicago
Lee Valerie E, . 1989. The effects of single-sex schooling on student achievement and attitudes in Nigeria. Washington, DC: World Bank.
Harvard
Lee V. E., . (1989). The effects of single-sex schooling on student achievement and attitudes in Nigeria. Washington, DC: World Bank.
MLA
Lee Valerie E, . The effects of single-sex schooling on student achievement and attitudes in Nigeria. Washington, DC: World Bank. 1989.