APA-ийн эшлэл(7 дахь хэвлэлт)

Francis, P. A. (1998). Hard lessons: Primary schools, community, and social capital in Nigeria. World Bank.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Francis, Paul A. Hard Lessons: Primary Schools, Community, and Social Capital in Nigeria. Washington, D.C.: World Bank, 1998.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Francis, Paul A. Hard Lessons: Primary Schools, Community, and Social Capital in Nigeria. World Bank, 1998.