Catastrophe or new society?: a Latin American world model
by Amilcar O. Herrera ... [et al.]
International Development Research Centre, 1976
 Buku Teks SO
Latin American nations in world politics
edited by Heraldo Munoz and Joseph S. Tulchin
Westview Press, 1984
 Buku Teks SO
Webster's new world dictionary of the American language
David B. Guralnik, editor in chief
Prentice-Hall, 1986
 Buku Referensi
Webster's new world dictionary of American English
Victoria Neufeldt, David B. Guralnik, editor
Webster's New World, 1988
 Buku Referensi
Webster's New World dictionary of the American language
David B. Guralnik, editor in chief
William Collins Publishers, 1976
 Buku Referensi