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} }