(1980). Language problems & language planning. University of Texas Press in cooperation with the Center for Research and Documentation on World Language Problems.
Čikaški stil citiranja (17. izdanje)Language Problems & Language Planning. Austin, Texas: University of Texas Press in cooperation with the Center for Research and Documentation on World Language Problems, 1980.
MLA način citiranja (9. izdanje)Language Problems & Language Planning. University of Texas Press in cooperation with the Center for Research and Documentation on World Language Problems, 1980.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.