Bartsch, R. (1987). Norms of language: Theoretical and practical aspects. Longman.
Cita Chicago (17th ed.)Bartsch, Renate. Norms of Language: Theoretical and Practical Aspects. Londres: Longman, 1987.
Cita MLA (9th ed.)Bartsch, Renate. Norms of Language: Theoretical and Practical Aspects. Longman, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.