Krom, N.J.
Barabudur : archaeological description; Volume IV
Gian Publishing House, 1986
 Buku Teks
Krom, N.J.
Barabudur, archaeological description; Volume I
Gian Publishing House, 1927
 Buku Teks
Krom, N.J.
Barabudur : archaeological description; Volume I
Gian Publishing House, 1986
 Buku Teks
Krom, N.J.
Barabudur : archaeological description; Volume V
Gian Publishing House, 1986
 Buku Teks
Srivastava, R.S.L.
Engineering mathematics; volume 2
Tata McGraw-Hill, 1980
 Buku Teks