Citação norma APA
African Association of science. (1990). Directory of scholarly journals published in Africa: A preliminary survey. Academy Science.
Citação norma Chicago
African Association of science. Directory of Scholarly Journals Published in Africa: A Preliminary Survey. Nairobi: Academy Science, 1990.
Citação norma MLA
African Association of science. Directory of Scholarly Journals Published in Africa: A Preliminary Survey. Academy Science, 1990.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.