APA (7th ed.) Citation

Papua New Guinea Library Association & Obi, M. (1977). Directory of libraries in Papua New Guinea (2nd ed.). Papua New Guinea Library Association.

Chicago Style (17th ed.) Citation

Papua New Guinea Library Association and Margaret Obi. Directory of Libraries in Papua New Guinea. 2nd ed. Port Moresby: Papua New Guinea Library Association, 1977.

MLA (9th ed.) Citation

Papua New Guinea Library Association and Margaret Obi. Directory of Libraries in Papua New Guinea. 2nd ed. Papua New Guinea Library Association, 1977.