Kipp, R. S. 1995. Conversion by Affiliation: The History of the Karo Batak Protestant Church. American Ethnologist 22. 868-882.
@article{kipp1995,
author = {Kipp, R. S.},
journal = {American Ethnologist},
number = {4},
pages = {868-882},
title = {Conversion by Affiliation: The History of the Karo Batak Protestant Church},
url = {http://www.jstor.org/stable/646390},
volume = {22},
year = {1995}
}