Philippines. Commission on Population. (1974). Four-year population program: '73-'74 through '76-'77. The Commission.
Chicago-referens (17:e uppl.)Philippines. Commission on Population. Four-year Population Program: '73-'74 Through '76-'77. Makati, Rizal: The Commission, 1974.
MLA-referens (9:e uppl.)Philippines. Commission on Population. Four-year Population Program: '73-'74 Through '76-'77. The Commission, 1974.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.