Richmond, Wendy
Design & technology: erasing the boundaries
Van Nostrand Reinhold, 1990
 Buku Referensi
Prince, Thomas R.
Extension the boundaries of accounting theory
South-Western Publishing, 1963
 Buku Teks
Bruhn, John G.
Managing boundaries in the health professions
Charles C. Thomas, 1993
 Buku Teks
Doob, Leonard William, 1909-
Communication in Africa: a search for boundaries
Yale University Press, 1961
 Buku Teks SO
Sophia and praxis: the boundaries of politics
edited by J.M. Porter
Chatam House, 1984
 Buku Teks SO