Cita APA

Adams, T. S., & Sumner, H. L. (1920). Labor problems: A text book. New York: MacMillan.

Citación estilo Chicago

Adams, Thomas Sewall, and Helen L. Sumner. Labor Problems: A Text Book. New York: MacMillan, 1920.

Cita MLA

Adams, Thomas Sewall, and Helen L. Sumner. Labor Problems: A Text Book. New York: MacMillan, 1920.