Melady, Thomas Patrick
Profiles of African leaders
Macmillan, 1961
 Buku Teks
Community leaders of the world
North Corolina : The American Biographical Institute, 1986,
 Buku Referensi
Ople, Blas F.
Profiles in Virtues : a collection of tributes to outstanding Filipino citizens and leaders
The Institute for Public Policy, 2001
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Countries of the world and their leaders yearbook 1991
edited by Frank E. Bair
Gale Research Inc., 1991
 Buku Referensi
"Goverment
 Buku Teks