APA

National Center for Health Statistics U.S, . (2008). Measures of cognitive functioning in the 1994-2000 Second Longitudinal Study of Aging. Hyattsville, MD: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics.

Chicago

National Center for Health Statistics U.S, . 2008. Measures of cognitive functioning in the 1994-2000 Second Longitudinal Study of Aging. Hyattsville, MD: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics.

Harvard

National Center for Health Statistics U.S, . (2008). Measures of cognitive functioning in the 1994-2000 Second Longitudinal Study of Aging. Hyattsville, MD: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics.

MLA

National Center for Health Statistics U.S, . Measures of cognitive functioning in the 1994-2000 Second Longitudinal Study of Aging. Hyattsville, MD: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics. 2008.