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Answered By: Iris Carroll Last Updated: Jun 29, 2016 Views: 10
A source within a secondary source is acceptable and are often referred to as "indirect sources". Whenever possible cite from the original source. If what you quote or paraphrase is itself a quotation, use the abbreviation qtd. in (quoted in) before the indirect source within the parenthetical reference. See MLA Handbook, 7th Ed. section 6.4.7 for example.
For more information click the link below for primary sources