Friendship and world peace: stones from universities throughout the world
Soka University, [date of publication not identified]
 Buku Referensi
Spiegel, Ross
Green building materials : a guide to product selection and specification
John Wiley & Sons, 1999
 Buku Teks SO
Levy, Sidney M.
Construction process planning and management : an owner's guide to successful projects
Elsevier , 2010
 Buku Teks SO
Schumann, Walter
Gemstones of the world
Sterling, 1997
 Buku Referensi
Hartanto Hadiwidjaja
Kompatibilitas antara bahan cetak silicone dan dental stone tipe IV
1991
 UI - Tesis Membership