Africa yesterday and today
edited by Clark D. Moore and Ann Dunbar
Bantam Books, 1968
 Buku Teks SO
Kampung boy: yesterday & today
Berita Publishing Sdn Bhd, 1993
 Buku Referensi
Ahuja, B.N.
Communications yesterday, today and tomorrow
Surjeet Publications, 1989
 Buku Teks SO
Africa today
edited by C. Grove Haines
John Hopkins Press, 1956
 Buku Teks SO
Arnstein, Walter L.
Britain yesterday and today : 1830 to the present
Head, 1983
 Buku Teks SO