"A distinctively new year", Asia Africa Intelligence Wire, Financial Times Ltd, 2005-02-08, retrieved 25 October 2017
Arumanadi, Bambang; Soetomo W. E; Asmito; Proyek Inventarisasi dan Pembinaan Nilai-Nilai Budaya (Indonesia) (1992), Ruwatan : upacara mohon keselamatan bagi anak "Sukerto", Departemen Pendidikan dan Kebudayaan Direktorat Jenderal Kebudayaan, Direktorat Sejarah dan Nilai Tradisional, Bagian Proyek Inventarisasi dan Pembinaan Nilai-Nilai Budaya, retrieved 20 July 2023
For Balinese version of the practice see - Bagus, I Gusti Ngurah; Proyek Javanologi (Indonesia) (1984), Upacara ruwatan di Bali, Proyek Javanologi, retrieved 20 July 2023
Australian National University (1966-06-30), "The Faculty of Oriental Studies (30 June 1966)", Report of the Council (315 of 1966), Govt. Print. Office: 92, ISSN0572-1318 reporting publication of the then ANU staff member Soebardi. Calendrical traditions in Indonesia Madjalah IIlmu-ilmu Satsra Indonesia, 1965 no.3. - Madjalah ilmu-ilmu sastra Indonesia = Indonesian journal of cultural studies, Jajasan Penerbitan Karya Sastra, Ikatan Sardjana Sastra Indonesia, Dengan Bantuan Departemen Research Nasional, 1963, ISSN0125-9946
