Dyfyniad APA

Papua New Guinea & United Nations Environment Programme. (1986). Environmental management in Papua New Guinea. [s.n.].

Dyfyniad Arddull Chicago

Papua New Guinea and United Nations Environment Programme. Environmental Management in Papua New Guinea. [S.l.]: [s.n.], 1986.

Dyfyniad MLA

Papua New Guinea and United Nations Environment Programme. Environmental Management in Papua New Guinea. [s.n.], 1986.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.