Cite secondary sources when pertinent information is is referenced in the text but you do not have access to the original source. When citing a secondary source using the APA format, cite both the primary and secondary source.
Quote or paraphrase the information from the secondary resource. Before the ending punctuation, add an in-text citation. Assuming that the author of the secondary source is Sam Smith, and his quote appears in a work by John Jones, the citation is styled as follows: Sam Smith, when he said, "Six children dropped out of school this year" (as cited in Jones, 2003, p. 44), was referring to the year 1971.
Create an APA-style reference entry for the primary source, John Jones's work, and add it to your reference page at the end of your document. Do not add a reference for the secondary source.