Tohutoro APA (7th ed.)

Johns, R. J. (1983). Common forest trees of Papua New Guinea (Rev. ed. 1983.). PNG University of Technology.

Tohutoru Kātū Chicago

Johns, R. J. Common Forest Trees of Papua New Guinea. Rev. ed. 1983. LAe: PNG University of Technology, 1983.

Tohutoro MLA

Johns, R. J. Common Forest Trees of Papua New Guinea. Rev. ed. 1983. PNG University of Technology, 1983.