Daily Mail year book 1987
edited by P. J. Failes
Associated Magazines, 1987
 Buku Referensi
Whitaker, Joseph
An almanack for the year of our Lord 1987
J. Whitaker and Sons, 1987
 Buku Referensi
The Java annual directory and almanak for the year of our lord 1814.
Batavia, Govermnmen Press, 1814
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Potter, Simeon
Our language
Penguin Books, 1979
 Buku Teks SO
The aviation & aerospace almanac 1997
executive editor Richard Lampl
Aviation Week Group, 1997
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