Ferguson, G. R. (1988). Language planning in education: An analysis of theory and practice. British Library Document Supply Centre.
Lua i Stíl Chicago (17ú heag.)Ferguson, Gibson R. Language Planning in Education: An Analysis of Theory and Practice. Boston Spa, United Kingdom: British Library Document Supply Centre, 1988.
Lua MLA (8ú heag.)Ferguson, Gibson R. Language Planning in Education: An Analysis of Theory and Practice. British Library Document Supply Centre, 1988.
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