Velie, Lester
Labor U.S.A. / Lester Velie
Harper Brother, 1959
 Buku Teks
Widick, B.J.
Labor today : the triumhs and failures of unienism in the United States / B.J. Widick
Houghton Mifflin , 1964
 Buku Teks
Taft, Philip
The structure and government of labor unions
Harvard University Press, 1954-1962
 Buku Teks
Beirne, Joseph A.
Challenge to Labor new roles for American trade unions
Prentice-Hall, 1969
 Buku Teks
Pelling, Henry
American labor / Henry Pelling
The University of Chicago Press, 1962
 Buku Teks