APA aipamena

Cummins, E., & Devyver, F. T. (1947). Labour problem in the United States. N.van nustrand co.

Chicago Style aipamena

Cummins, E.E, and Frank T. Devyver. Labour Problem in the United States. London: N.van nustrand co, 1947.

MLA aipamena

Cummins, E.E, and Frank T. Devyver. Labour Problem in the United States. N.van nustrand co, 1947.