APA-viite (7. p.)
Austen, R. A., & Derrick, J. (1999). Middlemen of the Cameroons Rivers: The Duala and their hinterland, c.1600-c.1960. Cambridge University Press.
Chicago-viite (17. p.)
Austen, Ralph A., ja Jonathan Derrick. Middlemen of the Cameroons Rivers: The Duala and Their Hinterland, C.1600-c.1960. Cambridge ; New York: Cambridge University Press, 1999.
MLA-viite (9. p.)
Austen, Ralph A., ja Jonathan Derrick. Middlemen of the Cameroons Rivers: The Duala and Their Hinterland, C.1600-c.1960. Cambridge University Press, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.