(1975). TEACHERS STUDY guide on the biology of human population: Africa. Unesco.
Chicago Style aipamenaTEACHERS STUDY Guide on the Biology of Human Population: Africa. Unesco, 1975.
MLA aipamenaTEACHERS STUDY Guide on the Biology of Human Population: Africa. Unesco, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.