APA (7th ed.) Citation

Papua New Guinea. National Population Census Office. (1980). Questions and answers about the 1980 National Population Census. National Population Census Project.

Chicago Style (17th ed.) Citation

Papua New Guinea. National Population Census Office. Questions and Answers About the 1980 National Population Census. [Port Moresby]: National Population Census Project, 1980.

MLA (9th ed.) Citation

Papua New Guinea. National Population Census Office. Questions and Answers About the 1980 National Population Census. National Population Census Project, 1980.