Silving, H. (1948). Immigration laws of the United States ([Library ed.].). Oceana Publications.
Cita Chicago (17th ed.)Silving, Helen. Immigration Laws of the United States. [Library ed.]. New York: Oceana Publications, 1948.
Cita MLA (9th ed.)Silving, Helen. Immigration Laws of the United States. [Library ed.]. Oceana Publications, 1948.
Atenció: Aquestes cites poden no estar 100% correctes.