Yavorsky, B.M.
Moscow : Mir Publishers, c1979
Buku Teks
Reid, D. A. G.
London: Longman, 1966
Buku Teks
edited by Paul G. Barash [and others]
Lippincott Williams & Wilkins, 2006
Buku Teks
H.K Rihan Int'l Culture Spread Limited, 2008
Buku Referensi
Buku Teks