Final answer:
Multiple references in APA 6th edition should be listed alphabetically by the first author's surname, not by publication year. For the same author, works are listed chronologically.
Step-by-step explanation:
When citing multiple references at once using APA 6th edition rules, they should be listed in alphabetical order by the surname of the first author or by title if there is no author. The cite does not prioritize by the year of publication. If you have several works by the same author, these are then arranged chronologically, starting with the earliest. Thus, for multiple references, they are ordered alphabetically and then by year within the same author's works, not strictly by publication date.
The references list at the end of your document should include all sources cited within the text. This list must be in alphabetical order as well, providing full publication information for each source mentioned. This ensures a standardized format throughout your paper, making it easy for readers to find the referenced works.