APA استشهاد

Friss, I. (1971). Economic laws, policy, planning. Akademial Kiado.

استشهاد بنمط شيكاغو

Friss, Istvan. Economic Laws, Policy, Planning. Hungary: Akademial Kiado, 1971.

MLA استشهاد

Friss, Istvan. Economic Laws, Policy, Planning. Akademial Kiado, 1971.