Não informado. (1972). Forestry digest. University of the Philippines, College of Forestry, Department of Forestry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Forestry Digest. Laguna, Filipinas: University of the Philippines, College of Forestry, Department of Forestry, 1972.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Forestry Digest. University of the Philippines, College of Forestry, Department of Forestry, 1972.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.