Eko Budihardjo, 1944-2014
Gajah Mada University Press, 1991
Buku Teks
Donhead,
Majalah, Jurnal, Buletin
EKo Budiharjo
Yogyakarta Gadjah Mada University 1991,
Buku Teks
Guttridge, Bryan
John Wiley & Sons, 1973
Buku Teks
edited by William J. Cavanaugh and Joseph A. Wilkes
John Wiley & Sons, 1999
Buku Teks