Panjaitan, Ostina E., author
Yayasan Sumber Agung, 1992
Buku Teks
Pandjaitan-Nasution, O.E., author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1990
UI - Skripsi Membership
Rohde, Peter Preisler, 1902-1978, author
Press Departement of the Ministry for Foreign Affairs, 1955?
Buku Teks
Kierkegaard, soren
Amsterdam Uitgeversmaatschappij Holland, [date of publication not identified]
Buku Teks
Kierkegaard, soren
Terwee, [t.th.]
Buku Teks