Cita APA (7th ed.)

Nigeria. National Population Bureau. (1984). The Nigeria fertility survey, 1981: Principal report. World Fetility Survey International Statistical Institute.

Cita Chicago (17th ed.)

Nigeria. National Population Bureau. The Nigeria Fertility Survey, 1981: Principal Report. Lagos [Nigeria]: World Fetility Survey International Statistical Institute, 1984.

Cita MLA (9th ed.)

Nigeria. National Population Bureau. The Nigeria Fertility Survey, 1981: Principal Report. World Fetility Survey International Statistical Institute, 1984.