APA aipamena

Watkins, G. S. (1922). An introduction to the study of labor problems. Thomas Y. Crowell Co..

Chicago Style aipamena

Watkins, Gordon S. An Introduction to the Study of Labor Problems. New York: Thomas Y. Crowell Co., 1922.

MLA aipamena

Watkins, Gordon S. An Introduction to the Study of Labor Problems. Thomas Y. Crowell Co., 1922.