This article has multiple issues. Please help or discuss these issues on the talk page. (Learn how and when to remove these template messages)
This article needs additional citations for verification. Please help by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: – ···scholar·JSTOR(February 2017) (Learn how and when to remove this template message)
This article's use of external links may not follow Wikipedia's policies or guidelines. Please by removing excessive or inappropriate external links, and converting useful links where appropriate into footnote references.(February 2017) (Learn how and when to remove this template message)
(Learn how and when to remove this template message)
Zulia (2008)