Philippines. Ministry of Natural Resources. (1978). Our forests. National Media Production Center.
Chicago-referens (17:e uppl.)Philippines. Ministry of Natural Resources. Our Forests. [S.l.]: National Media Production Center, 1978.
MLA-referens (9:e uppl.)Philippines. Ministry of Natural Resources. Our Forests. National Media Production Center, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.