National Library Service of Papua New Guinea. School Library Service. (1982). Simplified Dewey classification scheme and subject headings: For high schools in Papua New Guinea. School Library Service, National Library of Papua New Guinea.
Cytowanie według stylu Chicago (wyd. 17)National Library Service of Papua New Guinea. School Library Service. Simplified Dewey Classification Scheme and Subject Headings: For High Schools in Papua New Guinea. [Port Moresby]: School Library Service, National Library of Papua New Guinea, 1982.
Cytowanie według stylu MLA (wyd. 9)National Library Service of Papua New Guinea. School Library Service. Simplified Dewey Classification Scheme and Subject Headings: For High Schools in Papua New Guinea. School Library Service, National Library of Papua New Guinea, 1982.