Page, Lou Williams, author
Follet, 1964
Buku Teks
Cavin, Jerry D., author
Springer, 2012
eBooks
Laet, Rony De, author
Springer, 2012
eBooks
Schulz, Norbert S., author
Springer, 2012
eBooks
Kaufmann, William J., (III)
W.H. Freeman and Co. , 1978
Buku Teks