APA (7th ed.) Citation

Duffy, J. (1968). Portuguese Africa (3. pr.). Harvard Univ. Press.

Chicago Style (17th ed.) Citation

Duffy, James. Portuguese Africa. 3. pr. Cambridge, Mass: Harvard Univ. Press, 1968.

MLA (9th ed.) Citation

Duffy, James. Portuguese Africa. 3. pr. Harvard Univ. Press, 1968.

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