APA (7th ed.) Citation

Morris, R. J., Mosogo, E., & Amos, M. (1971). Radio survey: Morobe. Dept. of Information and Extension Services.

Chicago Style (17th ed.) Citation

Morris, R. J., E. Mosogo, and M. Amos. Radio Survey: Morobe. Port Moresby: Dept. of Information and Extension Services, 1971.

MLA (9th ed.) Citation

Morris, R. J., et al. Radio Survey: Morobe. Dept. of Information and Extension Services, 1971.