Gaya APA
Proceding of the 2011 International Seminar on Character Education Vol 1 (15 Desember 2015). (2011).
Surabaya:
University of Muhammadiyah Surabaya.
Gaya MLA
Proceding of the 2011 International Seminar on Character Education Vol 1 (15 Desember 2015).
.
Surabaya:
University of Muhammadiyah Surabaya,
2011.
Terbitan Berkala.