Andrew Norman Institute for Advanced Study in Gerontology and Geriatrics, Birren, J. E., Livingston, J., & Robinson, P. K. (1986). Age, health, and employment. Prentice-Hall.
Chicago (17e ed.) BronvermeldingAndrew Norman Institute for Advanced Study in Gerontology and Geriatrics, James E. Birren, Judy Livingston, en Pauline K. Robinson. Age, Health, and Employment. Englewood Cliffs, N.J: Prentice-Hall, 1986.
MLA (9e ed.) BronvermeldingAndrew Norman Institute for Advanced Study in Gerontology and Geriatrics, et al. Age, Health, and Employment. Prentice-Hall, 1986.
Let op: Deze citaties zijn niet altijd 100% accuraat.