In APA, in-text citations are inserted in the body of your research paper to document the source of your information. In-text citations point the reader to more complete information in the reference list at the end of the paper.
If you refer to the author's name in a sentence you do not have to include the name again as part of your in-text citation, instead include the date after the name and the page number (if there is one) at the end of the quotation or paraphrased section. For example:
Hunt (2011) explains that mother-infant attachment has been a leading topic of developmental research since John Bowlby found that "children raised in institutions were deficient in emotional and personality development" (p. 358).