APA (7th ed.) Citation

National Library Service of Papua New Guinea & Scott, K. (1990). ISBN user's manual (2nd ed.). National Library Service.

Chicago Style (17th ed.) Citation

National Library Service of Papua New Guinea and Kenneth Scott. ISBN User's Manual. 2nd ed. Port Moresby: National Library Service, 1990.

MLA (9th ed.) Citation

National Library Service of Papua New Guinea and Kenneth Scott. ISBN User's Manual. 2nd ed. National Library Service, 1990.

Warning: These citations may not always be 100% accurate.