H.A.W. Widjaja,1940-, author
RajaGrafindo Persada, 2008
Buku Teks
H.A.W. Widjaja,1940-, author
Rajawali, 2010
Buku Teks
H.A.W. Widjaja,1940-, author
RajaGrafindo Persada, 2004
Buku Teks
H.A.W. Widjaja,1940-, author
RajaGrafindo Persada, 2003
Buku Teks
Simbolon, F. Hilarius, author
Universitas Indonesia, 2013
UI - Skripsi (Membership)