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
Africa yesterday and today / edited by Clark D. Moore and Ann Dunbar
Bantam Books, 1968
Buku Teks SO
Ahuja, B. N.
Communications yesterday, today and tomorrow
Surjeet Publications, 1989
Buku Teks SO
Kampung boy: yesterday & today
Berita Publishing Sdn Bhd, 1993
Buku Referensi