APA (7e ed.) Bronvermelding

Ryan, J. A. (1921). The Labor Problem, What It Is- How to Solve It. A Catechism on the Social Question. New York.

Chicago (17e ed.) Bronvermelding

Ryan, John A. The Labor Problem, What It Is- How to Solve It. A Catechism on the Social Question. New York, 1921.

MLA (8e ed.) Bronvermelding

Ryan, John A. The Labor Problem, What It Is- How to Solve It. A Catechism on the Social Question. New York, 1921.

Let op: Deze citaties zijn niet altijd 100% accuraat.