Robertus Adi, Sarjono Owon and Dian Karina, Rachmawati (2023) Sosiolinguistik Suatu Pengenalan Awal. In: Sosiolinguistik Suatu Pengenalan Awal. Forum Silaturahmi Doktor Indonesia (FORSILADI), pp. 1-12. ISBN 978-623-88042-6-9
Robertus Adi, Sarjono Owon and Dian Karina, Rachmawati (2023) SOSIOLINGUISTIK SUATU PENGENALAN AWAL. Discussion Paper. Forum Silaturahmi Doktor Indonesia (FORSILADI).