This literature review has been conducted to inform the work of the National Standards for Quality Online Teaching revisions, a project led by a partnership between Quality Matters and the Virtual Learning Leadership Alliance. It includes a short summary of the relevant research literature followed by an alphabetical listing of the resources correlated to the National Standards for Quality Online Teaching to which they apply. This review includes an appendix that lists additional standards sets, which can be consulted as resources, as well as abstracts for most of the references listed.