Miller, Melanie Ann
Garland Publishing, 1986
Buku Referensi
Godman, Arthur
Macdonald, 1983
Buku Teks SO
Cayley, Neville W.
Angus and Robertson, 1931
Buku Teks SO
Busselle, Michael
RotoVision, 1999
Buku Teks SO
Hasegawa, Noriyoshi
Prgeone, 2006
Buku Teks SO