APA (7th ed.) Citation

Duffy, J. (1959). Portuguese Africa. Harvard Univ. Press.

Chicago Style (17th ed.) Citation

Duffy, James. Portuguese Africa. Cambridge, Mass: Harvard Univ. Press, 1959.

MLA (9th ed.) Citation

Duffy, James. Portuguese Africa. Harvard Univ. Press, 1959.

Warning: These citations may not always be 100% accurate.