Welch, Joseph N.
The constitution
Houghton Miffiln, 1956
 Buku Teks SO
Park, Won
Thoughts of a Korean
Inka University Press, 1970
 Buku Teks SO
Pringle, John Martin Douglas, 1912-
On second thoughts
Angus and Robertson, 1971
 Buku Teks SO
Matsushita, Konosuke
Thoughts on man
PHP Institute International, 1982
 Buku Teks SO
Zweig, Arnold
Presents the living thoughts of Spinoza
A Primier Book, 1959
 Buku Teks SO