Balzac, Honore de
Lost illusions
Penguin Books , 1971
 Buku Teks SO
The Oxford compendium of visual illusions
edited by Arthur Shapiro and Dejan Todorovic
Oxford University Press, 2017
 Buku Teks SO
Bachtiar Alam
Japan's ODA to Indonesia: statistical data
Yayasan Obor Indonesia, 2002
 Buku Teks SO
Bachtiar Alam
Japan's ODA to Indonesia : statistical data
Yayasan Obor Indonesia, 2002
 Buku Teks SO
Statistical pocket book of Indonesia 1963
Indonesia. Biro Pusat Statistik
Biro Pusat Statistik, 1963
 Buku Referensi