APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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