Nowell 1947, p. 7. Nowell, Charles E. (1947). "Portugal and the Partition of Africa". The Journal of Modern History. 19 (1). University of Chicago Press: 1–17. doi:10.1086/237079. S2CID143804168.
Nowell 1947, p. 8. Nowell, Charles E. (1947). "Portugal and the Partition of Africa". The Journal of Modern History. 19 (1). University of Chicago Press: 1–17. doi:10.1086/237079. S2CID143804168.
Nowell 1947, p. 10. Nowell, Charles E. (1947). "Portugal and the Partition of Africa". The Journal of Modern History. 19 (1). University of Chicago Press: 1–17. doi:10.1086/237079. S2CID143804168.
Nowell 1947, p. 7. Nowell, Charles E. (1947). "Portugal and the Partition of Africa". The Journal of Modern History. 19 (1). University of Chicago Press: 1–17. doi:10.1086/237079. S2CID143804168.
Nowell 1947, p. 8. Nowell, Charles E. (1947). "Portugal and the Partition of Africa". The Journal of Modern History. 19 (1). University of Chicago Press: 1–17. doi:10.1086/237079. S2CID143804168.
Nowell 1947, p. 10. Nowell, Charles E. (1947). "Portugal and the Partition of Africa". The Journal of Modern History. 19 (1). University of Chicago Press: 1–17. doi:10.1086/237079. S2CID143804168.