It is usually better to try to paraphrase your sources rather than use a direct quotation as paraphrasing allows you to incorporate the source you are citing into the own personal writing style and the general flow of your paper.
However, if quoting a source directly, always provide the author, date, and page number (if present) in the in-text citation.
When to use direct quotations rather than paraphrasing
Short quotation (less than 40 words):
If the quotation being used is less than 40 words, then enclose it with double quotation marks and incorporate it into the text or body of the paper being written.
Example: The author discusses how “the archetype of the outsider was personified in the Star Trek character of Mr. Spock” (Roddenberry, 2001, p. 25).
Block quotation (any quotation of 40 or more words):
If the quotation being used is 40 words or more, then it is treated as a block quotation.
Line spacing:
Quotations are covered in Sections 8.25-8.36 of the APA Publication Manual, 7th Edition