Citação norma APA

(1980). Language problems & language planning. University of Texas Press in cooperation with the Center for Research and Documentation on World Language Problems.

Citação norma Chicago

Language Problems & Language Planning. Austin, Texas: University of Texas Press in cooperation with the Center for Research and Documentation on World Language Problems, 1980.

Citação norma MLA

Language Problems & Language Planning. University of Texas Press in cooperation with the Center for Research and Documentation on World Language Problems, 1980.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.