[publisher not identified], [date of publication not identified]
Naskah
Harun Nasution...[et al.]; editor, Saiful Mujani dan Arief Subhan
Depdikbud, 1995
Buku Teks SO
Biro Penelitian Sekolah Tinggi Filsafat Teologi Fajar Timur,
Majalah, Jurnal, Buletin
Andreas A. Yewangoe, author
BPK Gunung Mulia, 2001
Buku Teks SO
Smith, Huston, author
Serat Alam Media, 2015
Buku Teks SO