Philippines (Republic). (1970). Four-year agricultural development program [1971-1974]. s.n.].
Chicago-referens (17:e uppl.)Philippines (Republic). Four-year Agricultural Development Program [1971-1974]. [Manila: s.n.], 1970.
MLA-referens (9:e uppl.)Philippines (Republic). Four-year Agricultural Development Program [1971-1974]. s.n.], 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.