Cita APA (7a ed.)

Greenough, R. (1961). Africa calls...: Development of education, the needs and problems. UNESCO.

Cita Chicago Style (17a ed.)

Greenough, Richard. Africa Calls...: Development of Education, the Needs and Problems. Paris: UNESCO, 1961.

Cita MLA (8a ed.)

Greenough, Richard. Africa Calls...: Development of Education, the Needs and Problems. UNESCO, 1961.