McIlroy, John
Trade unions in Britain today
Manchester University Press , 1995
 Buku Teks
Barbash, Jack
Trade unions and national economy policy
John Hopkins Press, 1972
 Buku Teks
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
Clark D. Moore and Ann Dunbar
Africa yesterday and today
Praeger Publishers, 1968
 Buku Teks