smartphone
References
Crabb, P. B. (2003). Technology and self-regulation: The case of alarm clock use. Social Behavior and Personality: an international journal, 31(4), 343-347.
alarm clock
Hallowell, A. Irving (Alfred Irving), and Jennifer S. H. Brown. “The Ojibwa of Berens River, Manitoba: Ethnography into History.” Case Studies in Cultural Anthropology, Harcourt Brace Jovanovich College Publishers, 1991, pp. xx, 128, pp 8. ehraf link