Nadeak, Kustigar
Revolusi damai : rekaman kemelut Filipina
Pustaka Sianar Harapan, 1986
 Buku Teks SO
Roy, James A. Le
Americans in the philippines: a history of the conquest and fist years of occupation with an indructory account of the Spanish rule / James Alfred Le Roy
Houghton Mifflin, 1914.
 Buku Teks SO
Heinemann atlas 2
Heinemann Educational Books, 1986
 Buku Referensi
Ramos, Fidel V.
A call to duty : citizenship and civic responsibility in a third world democracy / Fidel V. Ramos
The Friends of Steady Eddie , 1993
 Buku Teks SO
Ramos, Fidel V.
Where I stand: a compaign kit on the issues / Fidel V. Ramos
Friends of Steady Eddie , 1992
 Buku Teks SO