(1974). Africa: The next thirty years. England.
Chicago Style (17. basım) AtıfAfrica: The Next Thirty Years. Sussex: England, 1974.
MLA (9th ed.) AtıfAfrica: The Next Thirty Years. England, 1974.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
(1974). Africa: The next thirty years. England.
Chicago Style (17. basım) AtıfAfrica: The Next Thirty Years. Sussex: England, 1974.
MLA (9th ed.) AtıfAfrica: The Next Thirty Years. England, 1974.