APA (7th ed.) Citation

Mulford, W. R., & Young, R. E. (1973). Cognitive development studies in Papua New Guinea. New Guinea Psychologists.

Chicago Style (17th ed.) Citation

Mulford, W. R., and R. E. Young. Cognitive Development Studies in Papua New Guinea. Boroko: New Guinea Psychologists, 1973.

MLA (9th ed.) Citation

Mulford, W. R., and R. E. Young. Cognitive Development Studies in Papua New Guinea. New Guinea Psychologists, 1973.