The statesman's year-book: stastistical and historical annual of the states of the world for the year 1992-1993
edited by Brian Hunter
Macmillan, 1992
 Buku Referensi
The statesman's year-book: stastistical and historical annual of the states of the world for the year 1991-1992
edited by Brian Hunter
Macmillan, 1991
 Buku Referensi
The statesman's year-book : statistical and historical annual of the states of the world for the year 1953
MacMillan St Martin's Press, 1953
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Year : an annual record of current pictorial history covering every important world event / editor, Baldwin H. Ward
YEAR Incorporated, [date of publication not identified]
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Spuler, Bertold
The muslim world : a historical survey
E.J. Brill, 1960
 Buku Teks