Gould, William B., IV
A primer on American labor law
MIT Press, 1982
 Buku Teks SO
Labor Relations law/ American Bar Association
Committee Reports, 1974
 Buku Teks SO
Law and society in contemporary japan american perspectives
edited by John O. Haley
Kendall / Hunt, 1988
 Buku Teks SO
Japan Labor Review
The Japan Institute for Labour Policy and Training, 2006
 Majalah, Jurnal, Buletin
Japan Labor Issues
The Japan Institute for Labour Policy and Training, 2018
 Majalah, Jurnal, Buletin