Cooke, Melinda W. (1990). "Chapter 5: National Security". In Hanratty, Dennis M.; Meditz, Sandra W. (eds.). Paraguay: A Country Study. Area Handbook Series (2nd ed.). Library of Congress. pp. 216–217. LCCN89600299. Retrieved 5 October 2021.
lccn.loc.gov
Cooke, Melinda W. (1990). "Chapter 5: National Security". In Hanratty, Dennis M.; Meditz, Sandra W. (eds.). Paraguay: A Country Study. Area Handbook Series (2nd ed.). Library of Congress. pp. 216–217. LCCN89600299. Retrieved 5 October 2021.
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Hudson, Rex A.; Meditz, Sandra W., eds. (1992). "Chapter 5. National Security". Uruguay: A Country Study(PDF) (2nd ed.). Federal Research Division, Library of Congress. pp. 222–223. ISBN0-8444-0737-2. Retrieved 13 June 2021.