Friss, I., Hajdu, G., .Morvay, P., & .Racz, J. (1971). Economic Laws, Policy, Planning L. Akademiai Kiado.
Lua i Stíl Chicago (17ú heag.)Friss, Istvan, Gy Hajdu, P. .Morvay, agus J. .Racz. Economic Laws, Policy, Planning L. Budapest: Akademiai Kiado, 1971.
Lua MLA (9ú heag.)Friss, Istvan, et al. Economic Laws, Policy, Planning L. Akademiai Kiado, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.