Jurnal penelitian
Dasar-dasar penelitian kualitatif : tata langkah dan teknik-teknik teoritisasi data
Metodologi penelitian kualitatif
Political research : methods and practical skills
Penelitian pendidikan: merancang dan melaksanakan penelitian pada bidang pendidikan
Foreign policy : theories, actors, cases
Misconceptions in chemistry: addressing perceptions in chemical education
Analytical chemistry : a guided inquiry approach quantitative analysis collection