Progress in language planning: international perspectives
edited by Juan Cobarrubias and Joshua A. Fishman
Mouton, 1983
 Buku Teks SO
The changing English language : psycholinguistic perspectives
edited by Marianne Hundt, Sandra Mollin, Simone E. Pfenninger
Cambridge University Press, 2017
 Buku Teks SO
Mind, Brain, and language: multidisciplinary perspectives
edited by Marie T. Banich,
Mahwah, New Jersey Lawrence Erlbaum Associates, publsh 2003
 Buku Teks SO
Language, culture, and cognition : anthropological perspectives
edited by Ronald W. Casson
Macmillan, 1981
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Cooper, Robert L.
Language planning and social change
Cambridge University Press, 1989
 Buku Teks SO