Barak, B. and Schiffman, L. G. (1981) Cognitive age: A Non-chronological Age Variable. Olsen, J. C. ed. Advances in Consumer Research, 7,602-6.
Barrett, A. E. (2003) Socioeconomic Status and Age Identity: The Role of Dimensions of Health in the Subjective Construction of Age, Journal of Gerontology, 58B (2) , 101-9.
Bowling, A., See-Tai, S., Ebrahim, S. et al. (2005) Attributes of Age-identity, Aging & Society, 25,479-500.