Platts, John T.
Sampson Low, Marston, 1959
Buku Referensi
Agrawal, Giriraj Sharan
Diamond pocket books, 2001
Buku Referensi
Texnika, 1993
Buku Referensi
I Gusti Made Sutjaja
Tuttle Publishing, 2009
Buku Referensi
Hornby, Albert Sydney
Oxford University Press, 1991
Buku Referensi