Problems and methods in linguistics
Wartburg, Walther von.
Reid, Joyce M. H.
Ullmann, Stephen.
Oxford Blackwell
1969
'... based on the French version of the second edition of the book, but the German text also has been consulted' - Publisher's note. 2nd French ed. originally published as 'Évolution et structure de la langue français'. Presses Universitaires, 1963. 2nd German ed. originally published as 'Einführung in Problematik und Methodik de Sprachwissenschaft'. Tübingen: Niemeyer Verlag, 1962
bibl p245-249
Language and languages.