APA (7th ed.) Citation

Papua and New Guinea. Dept. of Public Health, Beri, K. K., & Wallis, M. G. (1972). Environmental health and sanitation. Dept. of Public Health.

Chicago Style (17th ed.) Citation

Papua and New Guinea. Dept. of Public Health, K. K. Beri, and M. G. Wallis. Environmental Health and Sanitation. [Port Moresby]: Dept. of Public Health, 1972.

MLA (9th ed.) Citation

Papua and New Guinea. Dept. of Public Health, et al. Environmental Health and Sanitation. Dept. of Public Health, 1972.