Ravnholt, H.
Sriwidjaja , 1954
Buku Teks
Ravnholt, Henning
Det Danske Selskab, 1950
Buku Teks
Fauziah Syifa Purworini, author
Universitas Indonesia, 2017
UI - Skripsi (Membership)
Departemen Koperasi dan PPK, 1996
Buku Teks
Nidya Sabila Sagala, author
2019
UI - Tesis (Membership)