Philippine National Environment Protection Council. (1977). Philippine environmental quality 1977: The first annual report of the National. Philippine National Environment Protection Council.
Style de citation Chicago (17e éd.)Philippine National Environment Protection Council. Philippine Environmental Quality 1977: The First Annual Report of the National. Quezon City: Philippine National Environment Protection Council, 1977.
Style de citation MLA (9e éd.)Philippine National Environment Protection Council. Philippine Environmental Quality 1977: The First Annual Report of the National. Philippine National Environment Protection Council, 1977.
Attention : ces citations peuvent ne pas être correctes à 100%.