Pincus, Gregory, author
Academic Press, 1965
Buku Teks
Pincus, Gregory, author
Academic, 1965
Buku Teks
Browne, Elspeth, author
University of New South Wales, 1979
Buku Teks
New York, N.Y. United Nations 1979,
Buku Teks
Stycos, J. Mayone
McGraw-Hill, 1971
Buku Teks