Linguistics; phonology, morphology, syntax, discourse analysis, psycholinguistics, sociolinguistics, and critical discourse analysis. Literature: local literature studies, Indonesian literature, foreign literature studies, children literature, literature studies for character education, and other literature studies. Indonesian Language Teaching:curriculum development, learning methods, learning materials, learning media, assessment, Indonesian language learning across curricula, information and communications technology in Indonesian language learning, language skills, and other Indonesian language learning analyses.