APA (7th ed.) Citation

Papua New Guinea. (1983). Introduction to science: Science teachers guide, grade 7, unit 1. The Dept..

Chicago Style (17th ed.) Citation

Papua New Guinea. Introduction to Science: Science Teachers Guide, Grade 7, Unit 1. [Port Moresby]: The Dept., 1983.

MLA (9th ed.) Citation

Papua New Guinea. Introduction to Science: Science Teachers Guide, Grade 7, Unit 1. The Dept., 1983.