MLA

Silverman, Samuel. Psychologic Cues In Forecasting Physical Illness. London: Butterworths, 1970.

APA

Silverman, S. (1970). Psychologic cues in forecasting physical illness. London: Butterworths.

Chicago

Silverman, Samuel, Psychologic Cues In Forecasting Physical Illness. London: Butterworths, 1970.