Eves, Howard, author
Holt, Rinehart and Winston, 1964
Buku Teks
Parkinson, Claire L., author
G.K. Hall, 1984
Buku Teks
Tobies, Renate, author
Springer, 2012
eBooks
Coen, Salvatore, editor
[Springer, ], 2012
eBooks
Universitas Indonesia, 2013
UI - Skripsi Membership