Okawa, Ryuho
The laws of the sun: the revelation of Buddha that enlightens the new age
IRH Press, 1991
 Buku Teks SO
Invectment laws of the world
New York: Oceana Publications,Inc, 1994,
 Buku Referensi
Investment laws of the world
New York: Oceana Publications,Inc, 1994,
 Buku Referensi
Invectment laws of the world
New York: Oceana Publications,Inc, 1994,
 Buku Referensi
Investment laws of the world
New York: Oceana Publications,Inc, 1994,
 Buku Referensi