Singh, H. K.
Science and our age / H. K. Singh.
Allied Publishers, 1978
Buku Teks SO
Bendix, Reinhard
Nation-building and citizenship: studies of our changing social order
John Wiley, 1964
Buku Teks SO
Pelz, Ruth.
The Washington story : a history of our State / Ruth Pelz.
Murray Pub. Co, 1979
Buku Teks SO
Slight progress wrong direction of agricultural development
Artikel Jurnal
McClelland, David Clarence
The Achieving society
The Free Press, 1967
Buku Teks SO