Whitaker's concise almanack 1994
J. Whitaker and Sons, 1994
Buku Referensi
Whitaker's almanack 1994
J. Whitaker and Sons , 1993
Buku Referensi
Whitaker's almanack 1991
J. Whitaker and Sons, 1990
Buku Referensi
Whitaker`s books in print 1994 : the reference catalogue of current literature; Volume 2
J. Whitaker and Sons, 1994
Buku Referensi
Whitaker's books in print 1994 : the reference catalogue of current literature; Volume 1
J. Whitaker and Sons, 1994
Buku Referensi