@inbook{Kopytoff1987,
author = {Kopytoff, I.},
title= {The internal African frontier: the making of African political culture},
year = {1987},
editor = {Kopytoff, I.},
booktitle = {The African Frontier: the Reproduction of Traditional African Societies},
address = {Bloomington},
publisher = {Indiana University Press},
pages = {3--84},
}