Bartsch, R. (1987). Norms of language: Theoretical and practical aspects. Longman.
Citazione stile Chigago Style (17a edizione)Bartsch, Renate. Norms of Language: Theoretical and Practical Aspects. Londres: Longman, 1987.
Citatione MLA (9a ed.)Bartsch, Renate. Norms of Language: Theoretical and Practical Aspects. Longman, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.