JOHNS, R. J. (1983). Common forest trees of Papua New Guinea (Rev. ed.). Lae: Forest Departement, PNG Unitech.
Chicago Style CitationJOHNS, R. J. Common Forest Trees of Papua New Guinea. Rev. ed. Lae: Forest Departement, PNG Unitech, 1983.
MLA CitationJOHNS, R. J. Common Forest Trees of Papua New Guinea. Rev. ed. Lae: Forest Departement, PNG Unitech, 1983.
Warning: These citations may not always be 100% accurate.