Barrett, D. (1971). Your future: A guide to careers in Papua New Guinea. D. Barrett.
Lua i Stíl Chicago (17ú heag.)Barrett, Don. Your Future: A Guide to Careers in Papua New Guinea. Port Moresby: D. Barrett, 1971.
Lua MLA (9ú heag.)Barrett, Don. Your Future: A Guide to Careers in Papua New Guinea. D. Barrett, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.