Hansen, Harry
A Mentor Book, 1961
Buku Teks SO
Ismail Marahimin
Louisiana State University Press, 1986
Buku Teks SO
Preston, Paul
Dorsey Press, 1986
Buku Teks SO
Mitchell, Joseph B. [Joseph Brady], 1915-
G.P. Putnam, 1955
Buku Teks SO
Stephen John Stedman
0, 0
Buku Teks