Sample American Psychological Association style literature reviews with citations are available in the Purdue University Online Writing Lab. The sample literature reviews contain notes explaining the APA style guidelines and directions for writing and citing in the APA format.
The Purdue University OWL website offers other APA resources, including the full APA Formatting and Style Guide and an APA Overview and Workshop. The workshop addresses when to use the APA style as well as formatting and resource citation rules. The APA FAQ section answers common questions and other links offer resources to explain in-text citations, citing statistics and APA abbreviations.