Taff, Philip
Cornell University Press, 1958
Buku Teks
Siedman, Joel
Labor Relation Cornel University, 1958
Buku Teks
Litwack, Leon, author
Prentice-Hall, 1962
Buku Teks
Ebbels, R.N., author
Landsdowne Press, 1965
Buku Teks
Silaban, Rekson, author
Friedrich Ebert Stiftng, 2009
Buku Teks