唯英语运动Over Puerto Rico Remarks. New York Times. Arthur Ochs Sulzberger, Jr. 2012-03-15 [2012-10-10]. (原始内容存档于2020-11-12). Crawford, James. Language Legislation
清小舌顫音(2006)沒有明確說明,但其在許多字尾帶/r/的例字中都使用了清輔音⟨r̥⟩。 ProQuest Document View - The Spanish of Ponce, Puerto Rico: A phonetic, phonological, and intonational analysis. [2019-07-24]. (原始内容存档于2016-03-03)