Não informado. United States quarterly book list. Library of Congress.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. United States Quarterly Book List. Washington: Library of Congress.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. United States Quarterly Book List. Library of Congress.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.