APA aipamena

Johnson, E. R. (1906). Improvements of labor conditions in the United States. The American Academy of Political and Social Science.

Chicago Style aipamena

Johnson, Emory R. Improvements of Labor Conditions in the United States. Philadelphia: The American Academy of Political and Social Science, 1906.

MLA aipamena

Johnson, Emory R. Improvements of Labor Conditions in the United States. The American Academy of Political and Social Science, 1906.