Roberts, A. R. (1991). Contemporary perspectives on crisis intervention and prevention. Prentice Hall.
Chicago (17e ed.) BronvermeldingRoberts, Albert R. Contemporary Perspectives on Crisis Intervention and Prevention. Englewood Cliffs, N.J: Prentice Hall, 1991.
MLA (9e ed.) BronvermeldingRoberts, Albert R. Contemporary Perspectives on Crisis Intervention and Prevention. Prentice Hall, 1991.
Let op: Deze citaties zijn niet altijd 100% accuraat.