Ryan, J. A. (1921). The Labor Problem, What It Is- How to Solve It. A Catechism on the Social Question. New York.
Style de citation Chicago (17e éd.)Ryan, John A. The Labor Problem, What It Is- How to Solve It. A Catechism on the Social Question. New York, 1921.
Style de citation MLA (8e éd.)Ryan, John A. The Labor Problem, What It Is- How to Solve It. A Catechism on the Social Question. New York, 1921.
Attention : ces citations peuvent ne pas être correctes à 100%.