APA

Downs H., Roll R. J., . (1981). The best years book: how to plan for fulfillment, security, and happiness in the retirement years. New York, N.Y: Delacorte Press/Eleanor Friede.

Chicago

Downs Hugh, Roll Richard J, . 1981. The best years book: how to plan for fulfillment, security, and happiness in the retirement years. New York, N.Y: Delacorte Press/Eleanor Friede.

Harvard

Downs H., Roll R. J., . (1981). The best years book: how to plan for fulfillment, security, and happiness in the retirement years. New York, N.Y: Delacorte Press/Eleanor Friede.

MLA

Downs Hugh, Roll Richard J, . The best years book: how to plan for fulfillment, security, and happiness in the retirement years. New York, N.Y: Delacorte Press/Eleanor Friede. 1981.