A reference is the full-citation to your source that you have cited in your work and it generally has four basic elements, each of which answers a question. For example:
The basic template of a reference citation in APA 7th is:
Author. (Date). Title. Source.
When creating your References page, you need to:
Note: Ignore the beginning articles such as: "the," "a," and "an."
See the chart below for guidelines what to do when an element is missing (adapted from Table 9.1 in the APA Manual).