Citazione Stile APA (7a Edizione)

Darby, J., & Williamson, A. P. (1978). Violence and the social services in Northern Ireland. Heinemann Educational.

Citazione stile Chigago Style (17a edizione)

Darby, John, e A. P. Williamson. Violence and the Social Services in Northern Ireland. London: Heinemann Educational, 1978.

Citatione MLA (8a ed.)

Darby, John, e A. P. Williamson. Violence and the Social Services in Northern Ireland. Heinemann Educational, 1978.