The Bulgarian national bibliography: history,present state and perspective for development Antonaeta Totomanova
 Artikel Jurnal
Beginning to remember : the past in the Indonesia present
edited by Mary S. Zurbuchen
University of Washington Press, 2005
 Buku Teks
Lipschutz, Seymour, 1915-2003
Schaums outline of theory and problems of beginning linear algebra
McGraw-Hill, 1997
 Buku Teks SO
Augustynek, Zdzislaw
Time: past, present, future
Kluwer Academic, 1989
 Buku Teks
Gregg, Pauline
the Welfare state : an economic and social history of Great Britain from 1945 to the present day
George G. Harrap, 1967
 Buku Teks