lohr, v. (1974). trends of development and some topical problems in czechoslovak agriculture. the institute of national planning.
Čikaški stil citiranja (17. izdanje)lohr, v. Trends of Development and Some Topical Problems in Czechoslovak Agriculture. cairo: the institute of national planning, 1974.
MLA način citiranja (9. izdanje)lohr, v. Trends of Development and Some Topical Problems in Czechoslovak Agriculture. the institute of national planning, 1974.