Citazione APA

Christophersen, P. (1939). The articles: A study of their theory and use in English. E. Munksgaard.

Stile di citazione Chicago

Christophersen, Paul. The Articles: A Study of Their Theory and Use in English. Copenhagen: E. Munksgaard, 1939.

Citazione MLA

Christophersen, Paul. The Articles: A Study of Their Theory and Use in English. E. Munksgaard, 1939.