Cristobal, C. B. (2004). Historical thinking skills of selected public high school students in Metro Manila.
Chicago-referens (17:e uppl.)Cristobal, Cristina B. Historical Thinking Skills of Selected Public High School Students in Metro Manila. 2004.
MLA-referens (9:e uppl.)Cristobal, Cristina B. Historical Thinking Skills of Selected Public High School Students in Metro Manila. 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.