Sitepu, Margaretha, author
Universitas Indonesia, 2006
UI - Tesis (Membership)
Emilda Firdaus, author
Rajawali Pers, 2023
Buku Teks
Hermien Hadiati Koeswadji, author
Citra Aditya Bakti, 1992
Buku Teks
Universitas Indonesia, 1999
UI - Skripsi (Membership)
Siagian, Mangara, author
Universitas Indonesia, 2005
UI - Skripsi (Membership)