Hu, Chiao-Mu
Thirty years of the communist party of China
Foreign Languages Press, 1952
 Buku Teks
Xiaojuan, Jiang
Thirty years since the opening-up in China : changes in growth mode structure and system
People's Publshing House, 2009
 Buku Teks
Landmark
Hungarian writerss on thirty years of history
[T.t.] Corvina Press [t.th.]
 Buku Teks
Cambridge, Ada. 1844-1926
Thirty years in Australia / Ada Cambridge
New South Wales University Press, 1989
 Buku Teks
Rob, Golding
Mini thirty-five years on/Rob Golding
The Bath Press, Avon, 1994
 Buku Teks