APA

Nicholson J. S., . (1928). Elements of political economy. : A & C Black LTd., London.

Chicago

Nicholson J Shield, . 1928. Elements of political economy. : A & C Black LTd., London.

Harvard

Nicholson J. S., . (1928). Elements of political economy. : A & C Black LTd., London.

MLA

Nicholson J Shield, . Elements of political economy. : A & C Black LTd., London. 1928.