Tohutoro APA (7th ed.)

Howlett, D. (1967). A geography of Papua and New Guinea. Nelson.

Tohutoru Kātū Chicago (17th ed.)

Howlett, D.R. A Geography of Papua and New Guinea. Sydney: Nelson, 1967.

Tohutoro MLA (9th ed.)

Howlett, D.R. A Geography of Papua and New Guinea. Nelson, 1967.