APA استشهاد

Kirkman, P. (1974). Credit control and debt collection. Surveys and publication department.

استشهاد بنمط شيكاغو

Kirkman, P.R.A. Credit Control and Debt Collection. London: Surveys and publication department, 1974.

MLA استشهاد

Kirkman, P.R.A. Credit Control and Debt Collection. Surveys and publication department, 1974.