Your best authority on APA will always be:
This tutorial is designed for those who have no previous knowledge of APA Style. It shows users how to structure and format their work, recommends ways to reduce bias in language, identifies how to avoid charges of plagiarism, shows how to cite references in text, and provides selected reference examples.
This tutorial provides an overview of key changes in the sixth edition of the Publication Manual.
This modular tutorial, created by the graduate school of education at Harvard, is a clear and comprehensive overview of using APA style to write and cite. Well worth your time!
Online databases or citation generators are not ALWAYS accurate. So proofread any citation generated by RefWorks or provided by a database (i.e, EBSCO, etc.)The final authority is the APA Style Manual and your instructor.