White, Irvin L., author
University of Arizona Press, 1972
Buku Teks
Wassenbergh, Henri A., author
Martinus Nijhoff, 1991
Buku Teks
Lee, Ricky J.
Springer, 2012
eBooks
Ball, John
Oughtershaw Press, 1996
Buku Teks
Heere, Wybo P., author
Oceana, 1972
Buku Teks