Putri, S. A. (2016). Improving students's peaking ability by using two stay two stray technique (a Classroom action research conducted in the eleventh grade students of SMA Muhammadiyah 1 Karanganyar in the academic year of 2015/2016). Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta.

Putri, Siti Ardiyana. Improving Students's Peaking Ability By Using Two Stay Two Stray Technique (a Classroom Action Research Conducted in the Eleventh Grade Students of SMA Muhammadiyah 1 Karanganyar in the Academic Year of 2015/2016). Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta, 2016.

Putri, Siti Ardiyana. Improving Students's Peaking Ability By Using Two Stay Two Stray Technique (a Classroom Action Research Conducted in the Eleventh Grade Students of SMA Muhammadiyah 1 Karanganyar in the Academic Year of 2015/2016). Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta, 2016.