Wells, Henry, author
The modernization of Puerto Rico: apolitical study of changing values and institutions
Harvard University Press, 1969
 Buku Teks
Godwin, Francis W., author
The Hidden force : a report of the international conference on middle level manpower, san juan, puerto rico, October 10-12-1962
Harper and Row, 1963
 Buku Teks
Peper, Rascha
Rico's vleugels / Rascha Peper
L.J. Veen, 1994
 Buku Teks
Grote, Ulrike
The Efficiency of marketing channels for the import of exotic fruits / by Ulrike Grote
Institute for Scientific Co-operation , 1995
 Buku Teks
Awakening minorities Americans Indian, Mexican Americans, Puerto Ricans
Aldine Publishing, 1970
 Buku Teks
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