Woollams, Geoff. 1996. A Grammar of Karo Batak, Sumatra. (Pacific Linguistics: Series C, 130.) Canberra: Research School of Pacific and Asian Studies, Australian National University. x+351pp.
@book{gWoollamsKaroBatak, author = {Woollams, Geoff}, pages = {x+351}, publisher = {Canberra: Research School of Pacific and Asian Studies, Australian National University}, series = {Pacific Linguistics: Series C}, title = {A Grammar of Karo Batak, Sumatra}, volume = {130}, year = {1996} }