So far, quite a lot of studies stub about TNKB, which describes the various aspects in the "body" of the TNKB. An important early study conducted by Denys Lombard called in his article entitled "the Congregation et Entreprise à Sumatra: L'exemple de Sheikh Abdul Wahab Rokan". The study that was done about the Lombard enterepreneur TNKB as a spiritual movement as well as well as the movement of the economy. Other studies can be called proceeding continued study of Lombard done Daniel Perret in the study entitled "La Formation d'un Paysage Ethnique Batak of Sumatra Malais et de Nord-Est", although in fact the focus did not discuss Was TNKB, but he was able to reinforce the findings of the Lombard that TNKB is capable of standing independently because it is supported by the Malay sultans.
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