Grambs, Jean Dresden
Holt Renehart and Winston, 1979
Buku Teks
Hana Farida, examiner
Fakultas Hukum Universitas Indonesia, 2019
UI - Skripsi (Membership)
Fathiah Gadih Ranti
2015
UI - Tesis (Membership)
Ministry of National Education, 2008
Buku Teks
Sitanggang, Desmawan Anselmus
Fakultas Ekonomi dan Bisinis Universitas Indonesia, 2022
UI - Tesis (Membership)