Goldstein, Joseph
The government of British trade unions : a study of apathy and the democratic process in the Transport and General Workers Union
Allen & Unwin, 1952
Buku Teks
Kompassindo
Standard trade & industri directory of Indonesia
Jakarta : Kompassindo, 1994,
Buku Referensi
Standard trade & industri directory of Indonesia
Kompassindo, 1994
Buku Referensi
Standard trade & industri directory of Indonesia
Kompassindo, 1994
Buku Referensi
Humphreys, Nick
Trade union law
Blackstone Press, 1999
Buku Teks SO