Citazione Stile APA (7a Edizione)

Abel, W. (1980). Agricultural fluctuations in Europe: From the thirteenth to the twentieth centuries. Methuen.

Citazione stile Chigago Style (17a edizione)

Abel, Wilhelm. Agricultural Fluctuations in Europe: From the Thirteenth to the Twentieth Centuries. London: Methuen, 1980.

Citatione MLA (8a ed.)

Abel, Wilhelm. Agricultural Fluctuations in Europe: From the Thirteenth to the Twentieth Centuries. Methuen, 1980.