Nowlan, Alden
I'm a stranger here myself
Irwin, 1974
 Buku Teks SO
Drucker, Peter Ferdinand, 1909-2005
America's next twenty years
Harper & Brothers, 1957
 Buku Teks SO
McKernan, Susan
A question of commitment : Australian literature in the twenty years after the war
Allen & Unwin, 1989
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Brown, Austin Channing
I'm still here : Black dignity in a world made for whiteness
Convergent Books, 2018
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Shaplen, Robert
The lost revolution: the story of twenty years of neglected opportunities in Vietnam and of America's failure foster democracy there
Harper & Row, 1965
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