Nugroho, Yohanes (2019) The implementation of cooperative integrated reading and composition to Improve students' vocabulary knowledge in one of the christian schools in Toraja. Bachelor thesis, Universitas Pelita Harapan.

Puspitaningsih, Aulia (2019) Penerapan model pembelajaran kooperatif tipe numbered heads together untuk meningkatkan keaktifan belajar siswa kelas XII IPA di dalah satu sekolah kristen di Medan. Bachelor thesis, Universitas Pelita Harapan.