Neumann, G. (Gerhard), author
Elsevier, 1968
Buku Teks
Olbers, Dirk, author
Springer, 2012
eBooks
Holt Rinehart & Winston, 1972
Buku Teks
Jakarta The Lontar Foundation 1990
UI - Makalah dan Kertas Kerja
Loomis, Chauncey C., author
The Modern Library , 2000
Buku Teks