Heere, Wybo P., author
Oceana, 1972
Buku Teks
White, Irvin L., author
University of Arizona Press, 1972
Buku Teks
edited by S. Pompe
Martinus Nijhoff, 1992
Buku Teks
Clamp, Cynthia G. L., author
Sage, 1999
Buku Teks
Jessup, Philip C. (Philip Caryl), 1897-1986, author
Yale University Press, 1956
Buku Teks