Agoes Soetijono
In-plane displacement measurement by using double beam method
1995
 UI - Tesis Membership
Rice, Bernard J.
Plane trigonometry
Prindle, Weber & Schmidt, 1975
 Buku Teks SO
Buchanan, Herbert E.
Plane trigonometry
Johnson Pub., 1926
 Buku Teks
Brink, Raymond
Plane trigonometry / Raymond Brink
D. Appleton-Century Co., 1940
 Buku Teks
Fuller, Gordon
Plane trigonometry with tables / Gordon Fuller
McGraw-Hill, 1972
 Buku Teks SO