Wolff, Robert Lee
The Balkans in our time / by Robert Lee Wolff
Harvard University Press, 1956
Buku Teks
Archaeologies of sexuality / edited by Robert A. Schmidt and Barbara L. Voss
Routledge, 2000
Buku Teks
Reed, Bill
Crooks / Bill Reed
Hyland House, 1984
Buku Teks
Crooks, J.E.
The Spectrum in chemistry / J.E. Crooks
Academic Press, 1978
Buku Teks
Heilbroner, Robert L.
The great ascent the strugle for economic development in our time / Robert L. Heilbroner
Harper & Row , 1963
Buku Teks