Izyumov, N.
MIR Publishers, 1980
Buku Teks
Siregar, Ashadi, author
LP3Y, 2001
Buku Teks
Muhammad Fauzi, author
2018
UI - Skripsi (Membership)
Keith, Michael C., author
Internews Indonesia, 2000
Buku Teks
Supardi Haliman, author
Pararaton, 2007
Buku Teks