McIlroy, John
Trade unions in Britain today
Manchester University Press , 1995
 Buku Teks SO
Barbash, Jack
Trade unions and national economy policy
John Hopkins Press, 1972
 Buku Teks SO
Kampung boy: yesterday & today
Berita Publishing Sdn Bhd, 1993
 Buku Referensi
Africa yesterday and today
Praeger Publishers, 1968
 Buku Teks SO
Africa yesterday and today
edited by Clark D. Moore and Ann Dunbar
Bantam Books, 1968
 Buku Teks SO